TY  - BOOK
ED  - United States.
TI  - E.M. Boynton single-track railway patents as applicable to present systems of railway transportation: hearings on H.R. 12870, Feb. 15, 1919
PY  - 1919///
CY  - [Washington, D.C.]
KW  - Monorail railroads
KW  - United States
KW  - Patents
N1  - CRDP Program Historic Shelflist record
ER  -