Productivity of world ecosystems : proceedings of a symposium presented August 31-September 1, 1972, at the V General Assembly of the Special Committee for the International Biological Program, Seattle, Washington /

Productivity of world ecosystems : proceedings of a symposium presented August 31-September 1, 1972, at the V General Assembly of the Special Committee for the International Biological Program, Seattle, Washington / symposium sponsored by U.S. National Committee for the International Biological Program, Division of Biological Sciences, Assembly of Life Sciences, National Research Council. - Washington : National Academy of Sciences, 1975. - vii, 166 p. : il.

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Produtividade biológica--Congressos.
Ecologia.--Congressos.
Meio ambiente--Congressos.

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