00600cam 22002051 450 1835347http://id.bnportugal.gov.pt/bib/porbase/183534720030607183100.00-674-22456-691612PTBN0057953119891114d1980 k y0pory0103 baengGB<The >ecology of human developmentexperiments by nature and designCambridgeHarvard University1980XV, 30 p.159.922medpor353060BronfenbrennerUrie1917-95045PTBNRPCCF-09-1coopUAVSDmq1245051bccoopUAVSD388160UAV27-237