Plant protection :
Sill, Webster H., 1916-.
Plant protection : an integrated interdisciplinary approach/ Webster H. Sill, Jr. - Ames, Iowa : Iowa State University, 1982. - 297 p. ; 24 cm.
0-8138-1665-3
SB950 / S55
Plant protection : an integrated interdisciplinary approach/ Webster H. Sill, Jr. - Ames, Iowa : Iowa State University, 1982. - 297 p. ; 24 cm.
0-8138-1665-3
SB950 / S55