To assess progress toward the development of a national groundwater protection program. Hearing before a subcommittee of the Committee on Government Operations, House of Representatives, Ninety-ninth Congress, first session, December 3, 1985.

الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)

المعلومات البيبليوغرافية