64244. The elements of railroad engineering / by William G. Raymond ; Henry E. Riggs and Walter C. Sadler. - 6th ed. - New York : John Wiley & sons, 1947. X, 442 p. : ill., uitsl.krt. : 23 cm. - PK : DE PATER K 418

64244. The elements of railroad engineering / by William G. Raymond ; Henry E. Riggs and Walter C. Sadler. - 6th ed. - New York : John Wiley & sons, 1947. X, 442 p. : ill., uitsl.krt. : 23 cm. - PK : DE PATER K 418