Chester, Clive R. Techniques in partial differential equations [by] Clive R. Chester. - New York McGraw-Hill [1970, c1971] - xvi, 440 p. illus. 23 cm. - International series in pure and applied mathematics . Bibliography: p. 419-431. LCCN: 71114443 Subjects--Topical Terms: Differential equations, Partial LC Class. No.: QA374 / .C46 Dewey Class. No.: 517/.383