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Earthworms in relation to agriculture
Hand-book of Indian agriculture
The first principles of agriculture
Elementary agriculture for southern schools
Class projects for agriculture students
Agriculture of the United States
Scientific agriculture; or, The elements of chemistry, geology, botany and meterology, applied to practical agriculture
Agriculture in Canada; modern principles of agriculture applicable to Canadian farming to yield greater profit
Denver Wildlife Research Center : International Programs Research Section : vertebrate pest management in agriculture : outreach program--FY 1992
Cooperative state-federal research in agriculture and forestry for better agriculture and better living