1. Wats::county_month_birth_rate_2005_version
    Monthly Growth Fertility Rates (GFR) for 12 urban Oklahoma counties
    csv| xlsx| json| ndjson| rda| rds
    tbl_df|1440 x 12
  2. Wats::county_month_birth_rate_2014_version
    Monthly Growth Fertility Rates (GFR) for 12 urban Oklahoma counties
    csv| xlsx| json| ndjson| rda| rds
    tbl_df|1440 x 12