01118cam a22003251 4500009122331MiAaHDL20240401000000.0m d cr bn ---auaua880920s1949 nyu||||| |||| 000 0|eng dsdr-coo.1383947(COO)Voyager1383947(OCoLC)63918857(NIC)notisAGJ8342(CStRLIN)NYCXA1006657BSAZTECRoss, Helen Beaumont,1915-A study of conservation education in the elementary schools of the United States.[Ithaca, N.Y.]1949.[5], 473 l.illus., maps.27 cm.Biography.Typewritten.Ph.D.Cornell Univ.September 1949Bibliography: leaves 371-384.Mode of access: Internet.Wildlife conservationfast(OCoLC)fst01175253Soil conservationfast(OCoLC)fst01124293Natural resourcesStudy and teachingfast(OCoLC)fst01034490Educationfast(OCoLC)fst00902499Natural resourcesStudy and teachingEducationSoil conservationWildlife conservation00912233120220305174354.920240401000000.020240401142136.02024-10-26T17:38:48ZSDR-COOcooFOLIOprepare.pl-004-008BKsdr-coo.1383947cooSDRCOO1383947coo.31924013056456COO1383947COOCOO20241026googlecoo.319240130564561949icbibUS bib date1 >= 1931