00668pam a2200241 i 45000010008000000030006000080050017000140080041000310100017000720200015000890200022001040400019001260500023001450820013001681000019001812450042002002600049002423000035002915000020003265040030003466000020003766500030003963243820UOEML20250319092605.0800215s1981    nyua     b    001 0 eng    a   80011396   a0195027604  a0195027612 (pbk.)  aUOELcDLCdDLC00aQL763.5b.F33 198100a599.05/11 aFagen, Robert.10aAnimal play behavior /cRobert Fagen.  aNew York :bOxford University Press,cc1981.  axvii, 684 p. :bill. ;c24 cm.  aIncludes index.  aBibliography: p. 562-652.  aAnimal behavior 0aPlay behavior in animals.