ID:DA0456763X
Pennsylvania. University. Institute for Environmental Studies
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[by] Paul L. Niebanck ; with the assistance of Mark R. Yessian
University of Pennsylvania Press 1968 Environmental studies series
Available at 23 libraries
Grace Milgram, with the assistance of Christine Mansfield
U.S. Dept. of Housing and Urban Development , For sale by the Supt. of Docs., U.S. Govt. Print. Off. 1967
Available at 1 libraries