000 00294nam a22001097a 4500
082 _a428.6ACK
100 _aPatricia Ackert
245 _aCause and Effect
260 _aCambridge, Massachusetts
_bHarper & Row
650 _aEnglish language-Text-books for foreign speakers.
942 _2ddc
_cMON
_01
999 _c25455
_d25455