Ahrons, E. L. (1921). Steam engine valves and valve gear... / by E.L. Ahrons. Pitman.
Chicago Edition CitationAhrons, Ernest Leopold. Steam Engine Valves and Valve Gear... / by E.L. Ahrons. Pitman, 1921.
MLA Edition CitationAhrons, Ernest Leopold. Steam Engine Valves and Valve Gear... / by E.L. Ahrons. Pitman, 1921.
Warning: These citations may not always be 100% accurate.