TY  - JOUR 
AU  - Martínez Vara, Tomás
AU  - Ediciones Universidad de Valladolid
PY  - 2022
SN  - 2951-7176
SN  - 1578-5777
UR  - https://uvadoc.uva.es/handle/10324/55544
LA  - spa
TI  - George Lee Boag, Manual of Railway Statistics y The Railways of Spain
DO  - https://doi.org/10.24197/tst.48.2022.141-145
ER  -