00769nam a2200229Ia 45000010005000000030005000050050017000100080041000270100015000680400024000830500023001071000055001302450058001852600077002433000041003203360026003613370028003873380027004155040040004426500034004826510023005168262BIBL20190809112136.0910822s1954 pr a b s00110 spa a 91008221 aEVLGbspaerdacost04aLB1051b.S148 195420aSánchez Hidalgo, Efraín Sigisfredod1918-1974.10aPsicología educativa /cEfraín Sánchez Hidalgo.0 aRío Piedras, P.R. :bEdiciones de la Univesidad de Puerto Rico,c1954. a694 pages :billustrations ;c24 cm. 2rdacontentbtxtatext 2rdamediabnaunmediated 2rdacarrierbncavolume aIncludes bibliographical footnotes. 0aEducational psychology2Local 0aPuerto Rico2Local