@book{ Solr-273880292, title = {The development of behavioral states and the expression of emotions in early infancy: new proposals for investigation}, author = {Wolff, Peter H.}, address = {Chicago, Ill. u.a.}, publisher = {Univ. of Chicago Pr.}, year = {1987}, note = {Literaturverz. S. 267 - 281}, url = {http://www.loc.gov/catdir/enhancements/fy0609/86016066-b.html} url = {http://www.loc.gov/catdir/enhancements/fy0608/86016066-d.html} url = {http://www.loc.gov/catdir/enhancements/fy0608/86016066-t.html} }