All functions
custom_stopwords	Default custom stop words
custom_synonyms	Default synonyms
get_papers_count	Number of paper for a given query
labels	Discipline and Subject labels dataset
make_search_url	Make a search URL for OnePetro
onepetro_page_to_dataframe	Reads a OnePetro URL and converts it to a dataframe
petroOne	petroOne.
read_onepetro	Read OnePetro web page given a query URL
summary_by_dates	Get summary dataframe by year
summary_by_doctype	Get summary dataframe by document type
summary_by_publications	Get summary dataframe by publication
summary_by_publisher	Get summary dataframe by publisher