TY  - BOOK
AU  - McCrystle, Jerome
TI  - Mine tracks: their location and construction treating briefly on the materials used and the principles involved in the désign ad installation, with a set of rules for a standard practice 
AV  - TN 336 M3
PY  - 1918///
CY  - New York
PB  - McGraw-Hill
KW  - Minas y riquezas minerales
KW  - Ferrocarriles
ER  -