Hinks, Arthur R. (Arthur Robert), 1873-1945 · Cambridge, University press · leaf 194
s that the whiteman has buried so carefully. In these countries also greattrouble is often experienced in maintaining the opaque signals,and much time is wasted through their destruction during thecourse of the work. Self-centering beacons. With the usual construction of beacons a great part of… … I. Heacon for interscrtccl point.
Maps · Surveying
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