Urban ecology : in search of an asphalt rose von George, Carl J.

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Environmental essays on the planet as home von Shepard, Paul 1925-

The Subversive science essays toward an ecology of man von McKinley, Daniel

The subversive science essays toward an ecology of man von Shepard, Paul 1925-

The subversive science; essays toward an ecology of man von Shepard, Paul 1925- ed, Shepard, Paul 1925- ed