00335nam a2200145   45000010005000000030003000050050017000080080041000250350018000660350017000840500019001011000022001202450031001422600016001739792UR20220428183256.0061102|||||||||||||||||||||||||||||||| d  a(janium) 9781  a(janium)9781 4aH61b.R87 19781 aRussell, Bertrand10aPerspectiva cientifica, la  bArielc1978