?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=PE&rft.aulast=Petrie&rft.au=Petrie%2C+PE&rft.title=Children+under+2+years+looked+after+by+childminders%3A+a+study+of+their+experiences+including+observations+of+their+interactions+with+mothers+and+minders+and+some+comparisons+with+day+nursery+children+of+a+similar+age&rft.date=1982