Environmental science :
challenge for the seventies : report of the National Science Board.

APA Citation

National Science Board (U.S.). (1971). Environmental science: challenge for the seventies : report of the National Science Board. Washington: The Board : for sale by the Supt. of Docs., U.S. Govt. Print. Off..

MLA Citation

National Science Board (U.S.). Environmental Science: Challenge for the Seventies : Report of the National Science Board. Washington: The Board : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1971.

Warning: These citations may not always be complete (especially for serials).