00696nam a22002057a 4500003000400000005001700004008004100021020001500062040000800077082002600085100003900111245005600150260003800206300001100244490001000255650005900265942001200324999001300336952014100349OSt20150602155329.0030206s2002    ck            000 0 spa d  a9701030680  cOSt04221aCH 373.5745bR6371 aRodríguez de Vega, Gladys 9584900aCiencias Naturales 2 / cGladys Rodríguez de Vega  aMéxico : bMcGraw Hill, c2000.  a272 p.  aII v.042LEMBxEDUCACIÓN AMBIENTAL-ENSEÑANZA PRIMARIA95856  2ddccBK  c969d969  00102ddc3USAP4050708HONDauspsbuspscGENd2013-04-22l0oCH 500 R637 No.2 2000p05900r2013-04-22 00:00:00tEj. 1w2013-04-22yBK