00679nam a2200193Ia 450000100070000000500170000700800410002402000150006505000210008024500960010126000310019730000330022850400510026165000400031265000350035265000370038770000340042470000270045827909420191120154643.0061020t2005    nyua          001 0 eng d  a159385117000aBF717b.N38 200504aThe nature of playbgreat apes and humanscedited by Anthony D. Pellegrini, Peter K. Smith.  aNew YorkbGuilfordcc2005.  ax, 308 p.bill., mapc24 cm.  aIncludes bibliographical references and index. 0aPlayxPsychological aspects.2Local 0aPsychology, Comparative2Local 0aPlay behavior in animals.2Local10aPellegrini, Anthony D.2Local10aSmith, Peter K.2Local