00350nam a2200121Ia 4500008004100000020001800041082000800059100002300067245007200090260004200162300000800204650001600212220919s9999    xx            000 0 und d  a9780669398656  bLAT  aLATORRE, DONALD R. 0aCALCULUS CONCEPTS AN INFORMAL APPROACH TO THE MATHEMATICS OF CHANGE  bDC HEATH AND COMPANY, LEXINGTONc1995  a557  aMathematics