00261nam a2200097Ia 4500020001900000100001800019245006000037942000800097008004100105999001700146  a9781775880783"  aAYERST  PETER 0aSHUTERS TOP CLASS NATURAL SCIENCE DICTIONARY GRADES 8 9  cBK 210805s9999    xx            000 0 und d  c55490d55489