Cramer, H. H.
Plant protection and world crop prduction / H. H. Cramer; translated by J. H. Edwards. - Leverkusen, Argentina : Farbenfabriken Bayer Ag., 19?. - 524 p. : ill.
88991035
Plants, Protection of.
Plant diseases.
Agricultural pests--Control.
Plant protection and world crop prduction / H. H. Cramer; translated by J. H. Edwards. - Leverkusen, Argentina : Farbenfabriken Bayer Ag., 19?. - 524 p. : ill.
88991035
Plants, Protection of.
Plant diseases.
Agricultural pests--Control.