| books_serials_etc_sample | Small sample of books, monographs, and serials and their information |
| car | Return first element of vector |
| check_isbn_10_check_digit | Check the check digit of an ISBN 10 |
| check_isbn_13_check_digit | Check the check digit of an ISBN 13 |
| check_issn_check_digit | Check the check digit of an ISSN |
| convert_to_isbn_13 | Convert ISBN 10 to ISBN 13 |
| country_code_crosswalk | Country code / country crosswalk |
| cp_lb_attributes | Copy special libbib attributes from one object to another |
| dewey_subject_crosswalk | Dewey Decimal Classification / Subject Description crosswalk |
| dt_add_to_col_names | Add string to all column names in a data.table |
| dt_counts_and_percents | Group by, count, and percent count in a data.table |
| dt_del_cols | Delete columns in a data.table |
| dt_keep_cols | Keep columns in a data.table |
| dt_na_breakdown | Get a breakdown of the NA-status of a column in a data.table |
| dt_percent_not_na | Return the percentage of non-NA instances in a data.table column |
| dt_set_clean_names | Takes a data.table and set to cleaned column names |
| fread_plus_date | Read a file and set a special libbib date attribute |
| fwrite_plus_date | Write a file with a date appended to the file name. |
| get_all_lc_call_subject_letters | Get all subject letters of LC Call Number |
| get_clean_names | Takes a data.frame and returns cleaned column names |
| get_country_from_code | Conversion from country code to country name |
| get_dewey_decimal_subject_class | Conversion from Dewey Decimal call numbers to first-level subject description |
| get_dewey_decimal_subject_division | Conversion from Dewey Decimal call numbers to second-level subject description |
| get_dewey_decimal_subject_section | Conversion from Dewey Decimal call numbers to third-level subject description |
| get_isbn_10_check_digit | Get ISBN 10 check digit |
| get_isbn_13_check_digit | Get ISBN 13 check digit |
| get_issn_check_digit | Get ISSN check digit |
| get_language_from_code | Conversion from language code to language name |
| get_lc_call_first_letter | Get the first letter of LC Call Number |
| get_lc_call_subject_classification | Conversion from Library of Congress Call number to subject classification |
| is_valid_isbn_10 | Return TRUE if valid ISBN 10 |
| is_valid_isbn_13 | Return TRUE if valid ISBN 13 |
| is_valid_issn | Return TRUE if valid ISSN |
| is_valid_lc_call | Check if LC Call Number is valid |
| language_code_crosswalk | language code / language crosswalk |
| lc_subject_classification | LC Call Subject Code Classification / Classification name crosswalk |
| lc_subject_subclassification | LC Subject Subclassification / Subclassification name crosswalk |
| loc_permalink_from_lccn | Get Library of Congress catalog permalinks from LCCNs |
| marc_008_get_info | Get info from MARC control field 008 |
| marc_leader_get_info | Get info from MARC leader |
| normalize_isbn | Attempt to enforce validity and canonical form to an ISBN |
| normalize_isbn_10 | Attempt to enforce validity and canonical form to ISBN 10 |
| normalize_isbn_13 | Attempt to enforce validity and canonical form to ISBN 13 |
| normalize_issn | Attempt to enforce validity and canonical form to ISSN |
| normalize_lccn | Attempt to enforce validity of LCCN and convert to normalized form |
| oclc_classify_link_from_standard_num | Get OCLC Classify link from a standard number |
| recombine_with_sep_closure | Return a function that will combine/contatenate a vector |
| remove_duplicates_and_nas | Remove duplicate elements and NAs from a vector |
| set_lb_attribute | Set special libbib attribute on object |
| set_lb_date | Set special libbib date attribute on object |
| split_map_filter_reduce | Split, Map, Filter, and Reduce a string vector |
| worldcat_api_bib_read_info_by | Get bibliographic info from a standard number |
| worldcat_api_bib_read_info_by_isbn | Get bibliographic info from a standard number |
| worldcat_api_bib_read_info_by_issn | Get bibliographic info from a standard number |
| worldcat_api_bib_read_info_by_oclc | Get bibliographic info from a standard number |
| worldcat_api_classify_by | Search WorldCat classify API by ISBN, ISSN, or OCLC number |
| worldcat_api_classify_by_isbn | Search WorldCat classify API by ISBN, ISSN, or OCLC number |
| worldcat_api_classify_by_issn | Search WorldCat classify API by ISBN, ISSN, or OCLC number |
| worldcat_api_classify_by_oclc | Search WorldCat classify API by ISBN, ISSN, or OCLC number |
| worldcat_api_locations_by | Get holding libraries by standard number |
| worldcat_api_locations_by_isbn | Get holding libraries by standard number |
| worldcat_api_locations_by_issn | Get holding libraries by standard number |
| worldcat_api_locations_by_oclc | Get holding libraries by standard number |
| worldcat_api_search | Use the WorldCat Search API |
| worldcat_permalink_from_isbn | Get WorldCat catalog permalinks from ISBNs |
| worldcat_permalink_from_issn | Get WorldCat catalog permalinks from ISSNs |
| worldcat_permalink_from_oclc_number | Get WorldCat catalog permalinks from OCLC numbers |