TY  - BOOK
ED  - Gurley (firma Comercial)
TI  - A manual of the principal instruments used in american engineering and surveying
AV  - TA581 G87 1870
PY  - 1870///
CY  - Troy, nueva york
PB  - W. l. e. gurley
KW  - Topografía
KW  - Instrumentos
KW  - Catalogos
ER  -