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EDITED BY

EMORY R. JOHNSON, PH.D., Sc.D.

PRINCIPLES OF

RAILROAD TRANSPORTATION

RAILROAD TRANSPORTATION

BY

EMORY R. JOHNSON, PH.D., Sc.D.

PROFESSOR OF TRANSPORTATION AND COMMERCE IN THE UNIVERSITY OF PENNSYLVANIA.
AUTHOR OF "OCEAN AND INLAND WATER TRANSPORTATION,"
"ELEMENTS OF TRANSPORTATION," ETC.

AND

THURMAN W. VAN METRE, A.M., PH.D.

INSTRUCTOR IN TRANSPORTATION IN THE SCHOOL OF BUSINESS

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COPYRIGHT, 1903, 1904, 1908, 1916,
BY D. APPLETON AND COMPANY

Printed in the United States of America

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