[Gulf Pub. Co.]. Companion text: The Oil weekly. Houston, TX: Gulf Pub. Co. February 21, 1938. North Decimal Degree 66.437222. South Decimal Degree -67.313611. East Decimal Degree 86.244722. West Decimal Degree 86.244722. Statistical table of "World crude oil production by countries, by years, for past 10 years. world crude oil production, by countries, by years, for past 10 years." Shows: established air lines, steamship and tanker routes, and oil refineries. Map is an insert supplement to "The oil Weekly's International, number February 231, 1938. Princeton Library does not have a copy of this issue.