Swartz, Clifford E. Back-of-the-envelope physics / Clifford Swartz. - Baltimore : Johns Hopkins University Press, 2003. - xvii, 155 p. : ill. ; 22 cm. ISBN: 0801872634 LCCN: 2002016143 Subjects--Topical Terms: Physics--Miscellanea. LC Class. No.: QC75 / .S83 2003 Dewey Class. No.: 530