00743cam a2200229 4500 517213780 TxAuBib 820125s1982||||||||||||||||||||||||eng|u 82001609 9780812025880 pbk. $6.95 0812025881 pbk. $6.95 DLC DLC DLC TxAuBib Downing, Douglas. Calculus by discovery. Calculus the easy way / Douglas Downing. Woodbury, N.Y. : Barron's Educational Series, Inc., 1982. xii, 273 p. : ill. ; 26 cm. Previously published as: Calculus by discovery. c1982. Includes index. Calculus. TXHSP