The geometry of geodesics / Herbert Busemann. Busemann, Herbert, 1905- Geometry, Differential. Curves on surfaces. QA3 .P8 vol. 6 526.3 BUG Includes bibliography. New York : Academic Press, c1955. c1955. 1955 Text vii, 422 p. : eng Pure and applied mathematics; a series of monographs and textbooks, 6 Pure and applied mathematics (Academic Press) ; 6