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acid acre AGRICULTURAL EXPERIMENT STATION airplane dusting Alien Land Law Amer Appl areas Asclepias Assoc bast fiber Bibliography BULLETINS butter butterschmalz calcium arsenate Calif California capitis Chem Cong cork oak cotton County crops Dairy dehydrated foods delousing Describes Discusses disease disinfection dried drying Econ effect eggs Expt farm fiber floss forest ghee illus Immigration Includes Indus industry infestation insecticides insects Inst Iowa Japanese Japanese farmers Japanese in California Jour July June labor Lambdina larvae Libr lice locust louse Lymantria monacha methods milk milkweed mosquitoes paris green pediculosis Pediculus humanus percent pests plane plants powder Proc Processed production Quercus suber relapsing fever RICKETTSIA rubber Russian Sept soil spray syriaca tests trench fever typhus fever U. S. Dept United Univ vitamin Washington Wchnschr Zashch Ztschr