Modern insecticides and world food production : [by] F.A. Gunther and L.R. Jeppson.

by Gunther, Francis A.
Published 1960

The Potato crop : the scientific basis for improvement /

Published 1978

Soils and the environment : a guide to soil surveys and their applications /

by Olson, Gerald W.
Published 1981

Field guide to soils and the environment : applications of soil surveys /

by Olson, Gerald W.
Published 1984

Acarine biocontrol agents : an illustrated key and manual /

by Gerson, U.
Published 1990

Microbial control of weeds /

Published 1991

Impacts of forest harvesting on long-term site productivity /

Published 1994

Biological control of insect pests and weeds /

by De Bach, Paul, 1914-
Published 1965

Biological control /

by Van Driesche, R. G.
Published 1996

Living marine resources : their utilization and management /

by Iversen, Edwin S.
Published 1996

Plant invaders : the threat to natural ecosystems /

by Cronk, Quentin C. B.
Published 1995

Mammals as pests /

Published 1989

Xanthomonas /

Published 1993

Fundamentals of aquacultural engineering /

by Lawson, Thomas B., 1943-
Published 1995

Viability of seeds /

by Roberts, E. H. (Eric Hywel), 1930-
Published 1972

Plant disease control : towards environmentally acceptable methods /

by Strange, Richard N.
Published 1993

The ecology of agricultural pests : biochemical approaches /

Published 1996

Plant genetic conservation : the in situ approach /

Published 1997

Pacific salmon & their ecosystems : status and future options /

Published 1997

Statistical methods for plant variety evaluation /

Published 1997