00775nab a2200217 uc450000100070000000500170000700800410002403500110006503500210007604000130009704100080011010000410011824501230015965000340028265000330031665000340034965000380038377301070042194200100052899900190053884124020260424102123.0030829s1997                        eng    a841240  a(OCoLC)820074210  ccomduadb  aeng10aOjeda, Mario Angel4auteaut952821210aA two level regression model for studying achievement of engineering students of Universidad del Valle, Cali, Colombia  aModelos de regresión963215 7aAnálisis de datos2950546  aModelos estadísticos923489 7aVariables aleatorias2lemb9269960 tInvestigación Operacional (La Habana)gVol. 18, No. 01-03, 1997, p. 69-74w508470x0257-43060122068  cARIMP  c288614d288614