An Easy Course in Using the HP-12Cde Chris Coffin, Ted WadmanEdiciones (1)An Easy Course in Using the HP-12C (1984)Grapevine Publications · inglés · ISBN 9780931011030Más obras de Chris CoffinTThe Family Internet Pocket GuideThe Family Internet Pocket GuideAn easy course in using the HP 19BIIEEasy Course in Using the Hp-225Easy Course in Using the Hp-225