000			00282nam a2200121 4500
082			_a370 _bSTU.S
084			_2Colon Classification
245			_aStudy of environment in school genera 1968 /
260			_bUnesco, _c1963.
300			_a700p. :
650			_aEducation
942			_cBK
999			_c684905 _d684905