Photomicrography with the Vickers Projection Microscope. 2nd Edition.
[rk. 2]
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The Surveyor's Level AND Base Line Measurement
[rk. 3]
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AMENDED PATENT APPLICATION NUMBER 695,297 FOR IMPROVEMENTS IN MICROSCOPE OBJECTIVES.
[rk. 4]
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Practical tunnelling. Explaining in detail the setting out of the works, shaft-sinking and heading-driving, ranging the lines and levelling under ground. 1944 Edition