Poor, Walter A. Differential geometric structures/ Walter A. Poor. - New York: McGraw-Hill, c1981. - xiii, 338 p.: ill.; 24 cm. Includes index. Bibliography: p. 317-323. ISBN: 0070504350 LCCN: 80019888 Subjects--Topical Terms: Geometry, Differential. Dewey Class. No.: 516.36 / P823d