Ward, M. (1827). Remarks, propositions and calculations: Relative to a railroad and locomotive engines to be used upon the same, from Baltimore to the Ohio River. Printed by J. D. Toy.
Dyfyniad Arddull ChicagoWard, Minus. Remarks, Propositions and Calculations: Relative to a Railroad and Locomotive Engines to Be Used upon the Same, from Baltimore to the Ohio River. Baltimore: Printed by J. D. Toy, 1827.
Dyfyniad MLAWard, Minus. Remarks, Propositions and Calculations: Relative to a Railroad and Locomotive Engines to Be Used upon the Same, from Baltimore to the Ohio River. Printed by J. D. Toy, 1827.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.