Karplus, Robert. Introductory physics; : a model approach. [electronic resource] . — New York, : W.A. Benjamin,, 1969.. — xix, 498 p. : illus., ports. 25 cm. Includes bibliographies. LCCN: 70078614 Subjects--Topical Terms: Physics. LC Class. No.: QC23 / .K294 Dewey Class. No.: 248.3/2 530