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Agriculture at the University of Illinois
The principles of agriculture and vegetation
Agriculture : a text for the farm
Essays in natural history and agriculture
The health of our soils : toward sustainable agriculture in Canada
Report of the North Carolina geological survey. together with descriptions of the fossils of the marl beds Agriculture of the eastern counties
Scientific agriculture; or, The elements of chemistry, geology, botany and meteorology, applied to practical agriculture
Insects; the yearbook of agriculture,1952
Miscellaneous studies in agriculture and biology
Insects injurious to agriculture in Japan