Yazar
William E Sopper
8 cilt bulundu.
William E. Sopper · Pennsylvania State University Press
479 sayfa · 1973
Sewage irrigation / Congresses / Water conservation / Soil conservation
William E. Sopper · Lewis Publishers
163 sayfa · 1993
Environmental aspects / Environmental aspects of Mineral industries / Mineral industries / Reclamation of land / Sewage sludge as fertilizer
William E Sopper · U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory
Sayfa sayısı yok · 1981
Environmental aspects / Environmental aspects of Strip mining / Sewage sludge / Strip mining
William E. Sopper · Symposium Publications Division, Pergamon Press
813 sayfa · 1967
Congresses / Forest Hydrology / Forests and forestry / Research / Forest influences
William E. Sopper · [Pennsylvania State University, College of Agriculture, Agricultural Experiment Station]
129 sayfa · 1970
Northeastern States / Stream measurements / Northeastern states
William E. Sopper · National Mine Land Reclamation Center, West Virginia University
36 sayfa · 1994
Reclamation of land / Revegetation / Sewage as fertilizer / Sewage sludge as fertilizer
William E Sopper · U.S. Environmental Protection Agency, Municipal Environmental Research Laboratory
Sayfa sayısı yok · 1984
Environmental aspects / Environmental aspects of Strip mining / Reclamation of land / Sewage sludge / Strip mining