00260nam a2200109 a 450000500170000002000150001708200180003210000130005024500230006326000410008630000230012720251202164128.0  a0201113589  a001.642,bdat  aDate, J.  aDatabase: a primer  aMassachusetts: Addison: Wesleyc1983  axvii,265p.c22 cm.