Whose oil is it? The question of subsoil rights in Mexico. - New York, N.Y., Standard oil company (N. J.) [1939] - 3 p. l., 16 p. 21 cm. "This booklet ... is the second in the series."--Foreword. LCCN: sd 40000101 Subjects--Topical Terms: Petroleum--Mexico. LC Class. No.: HD9574.M6 / S7