Pimentel, George C. Chemical bonding clarified through quantum mechanics [by] George C. Pimentel [and] Richard D. Spratley. - San Francisco Holden-Day [1969] - 343 p. illus. 24 cm. LCCN: 71075914 Subjects--Topical Terms: Chemical bonds.Quantum chemistry. LC Class. No.: QD461 / .P54 Dewey Class. No.: 541/.224