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The battle against the weeds

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By: United States. Department of Agriculture. - Moore, Ernest G. (Ernest George) - DuMars, M. L. (Maurice Leland),

Publication info: [Washington, D.C.], U.S. Department of Agriculture, 1945

Holding Institution: U.S. Department of Agriculture, National Agricultural Library
Natural control of injurious insects

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By: United States. Department of Agriculture. - Moore, Ernest G. (Ernest George) - DuMars, M. L. (Maurice Leland),

Publication info: [Washington, D.C.], U.S. Department of Agriculture, 1945

Holding Institution: U.S. Department of Agriculture, National Agricultural Library