عرض عادي عرض مارك عرض تدوب

Environmental quality : the ninth annual report of the council on environmental quality december 1978 / - First Edition. - xli, 599 pages : illustrations ; 24 cm.

Includes index.

Subjects--Topical Terms:
Biology

Index Terms--Genre/Form:
Environmental quality.
Natural resources.
Solid wastes.
Human settlements.
Economics.
Annual reports.

Dewey Class. No.: 577.05 / E61