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How Children Are Learning To Conserve
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4-H Club acres activities Adair County agencies Altho American animals areas birds bottleneck boys building chlorophyl College conservation education continent cooperation county agent crops Department of Agriculture developed discuss dust bowls elementary erosion families farm farmers Federal Security Agency feed fish Forestry forests G. P. Putnam's Sons goats Government Printing Office Grades V-VIII grass grazing group action grow gullies human resources insects interest Iowa land learned Lincoln sheep livestock living materials minerals National Education Association natural resources organic Pamphlets and Bulletins percent plants population practices problems production Pupils and Classroom rivers Rural Education rural schools rural teachers servation social soil and water Soil Conservation Service sources story suggestions supply Teachers and Library terraces thru timber tion topsoil trees U. S. Department United vegetation Washington waste watershed wild flowers wildlife WWTC Yearbook York