TY - BOOK AU - Bigham, Truman C. AU - ED - ED - ED - ED - SN - 2 PY - 1952///46 CY - New York PB - McGraw-Hill KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Transportation.;Transportation KW - United States N1 - 5 ER -