tag:blogger.com,1999:blog-7066997711286640384.post6605432216200277039..comments2007-09-14T11:48:45.945+02:00Comments on el holgazán: Efecto Hawthorne, efecto Pigmalión y efecto placeb...el holgazánhttp://www.blogger.com/profile/06957959468971558977noreply@blogger.comBlogger0125