00464nam a2200145 a 450000500170000000800410001702000150005805000250007310000180009824500260011626000380014230000210018065000270020165000900022820140310183323.0060309s19uu    xx            00    eng d  a0451162145  aPS 3569b.St912 1989  aStraub, Peter  aKoko /cPeter Straub.  aNew York :bPenguin Group,c1989.  a595 p. :c18 cm.  aAmerican sign language  a Animal communication Apes HumanxAnimal communication Sign language Patterson, Penny