00302nam a2200097   450000100070000000500170000700800360002410000350006024500700009526400390016501159320260807101641.0260101s1992    pe      000 0 eng  d1 aLinda Acredolo ; Susan Goodwyn10aBaby signs : how to talk with your baby before your baby can talk 1aIllinoisbContemporary Booksc1992