00621nam a22001937a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001200102110005300114245012400167260003200291300001100323650005400334650003900388CHAP20220329135046.0971013s1959            r     00010     d  a30263  a31235  a35347  cCHAP  a507bN3  aAcademia Nacional de Ciencias. Washington, D. C.  aScience in teh Americas . Prepares by the N.A. of S.-National Research Council for the U.S.-National Council for UNESCO  aWashington :bNAS,c(1959?)  a143 p.14aCienciaxEstudio y enseñanzaxAmérica Latina.14aInvestigaciónxAmérica Latina.