Yazar
m j shaffer
5 cilt bulundu.
M. J. Shaffer · U.S. Dept. of Agriculture, Agricultural Research Service
102 sayfa · 1987
Crops and soils / Computer programs / Tillage / Crop residues
L. Ahuja, Lajpat Ahuja, K. W. Rojas, J. D. Hanson, M. J. Shaffer, L. Ma · Water Resources Pubns
372 sayfa · 2000
Plant-soil relationships / Mathematical models / Water quality management / Water quality / Plant-water relationships
June Jamrich Parsons, Dan Oja, Patrick Carey, Roy Ageloff, Joseph J. Adamski, Robin M. Romer, Ann Shaffer · Course Technology
928 sayfa · 2001
Microsoft Windows (Computer file)
M. J. Shaffer · Taylor & Francis Group
662 sayfa · 2001
Soil management / Soils / Carbon content / Mathematical models / Nitrogen content
Shaffer, Ann, Carey, Patrick M., Finnegan, Kathy T., Adamski, Joseph J., Zimmerman, Beverly B. · Cengage Learning
Sayfa sayısı yok · 2009
Kategori yok