Agricultural practices and water qulity
Willrich Ted L Ed.
Agricultural practices and water qulity - Iowa Iowa State University 1970 - xxvii, 415p. cm.
Bib chapterwise
0813817455
General Book
Agriculture Labour
X9(J):(G:555), L0
Agricultural practices and water qulity - Iowa Iowa State University 1970 - xxvii, 415p. cm.
Bib chapterwise
0813817455
General Book
Agriculture Labour
X9(J):(G:555), L0
