Watt, Kenneth E.F.
Ecology and resource management: a quantiative approach - New York McGraw-Hill 1968 - ix, 450 p.
29780
Sustainable development
333.72 / WAT
Ecology and resource management: a quantiative approach - New York McGraw-Hill 1968 - ix, 450 p.
29780
Sustainable development
333.72 / WAT