Yazar
peter j nowak
3 cilt bulundu.
Cilt sonuçları
Baseline report
Peter J. Nowak · U.S. Dept. of Agriculture
79 sayfa · 1992
Water quality management / Evaluation / Water quality
Evaluation of producer involvement in the United States Department of Agriculture 1990 water quality demonstration projects
Peter J. Nowak · U.S. Dept. of Agriculture
Sayfa sayısı yok · 1992
Water quality management / Evaluation / Water quality
Communication and adoption evaluation of USDA water quality demonstration projects
Peter J. Nowak · Plant and Animal Science Production, Protection, and Processing, CSREES/USDA
43 sayfa · 1997
Water quality management / Farmers / Attitudes