@book{bhlitem58945, title = {Metro manual, a hand book for engineers; containing technical information regarding the construction, adjustment and use of transits, tachymeters, theodolites, alidades levels, etc }, copyright = {NOT_IN_COPYRIGHT}, url = {https://www.biodiversitylibrary.org/item/58945}, note = {https://www.biodiversitylibrary.org/bibliography/19219}, publisher = {Rochester, N.Y, 1915}, author = {Bausch & Lomb Optical Company.}, year = {}, pages = {260}, }