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Toxicity of barium carbonate to rats
Trees and shrubs of the United States : a bibliography for identification
Tobacco in the United States : production, marketing, manufacturing, exports
Scientific careers in entomology research
State guides for assessing forest land and timber, 1966
Plant hardiness zone map
Experiments in the disposal of irrigated crops through the use of hogs
Forest management of loblolly pine in Delaware, Maryland, and Virginia
Lessons on pork production for elementary rural schools