TY  - BOOK
AU  - Simms, Frederic Walter
TI  - A treatize on the principles and practice of levelling: showing its application to purposes of railway engineering and the construction of roads & c. 
AV  - TA606 S55 1866
PY  - 1866///
CY  - London
PB  - Lockwood
KW  - Carreteras
KW  - Nivelación
ER  -