(Special publication 234.) * For Sale by Superintendent of Documents. Paper, 15c. • Sent to Depository Libraries. Item 233
Notes:
NOTE.—The greater part of the material contained in this publication has been taken directly from Special publication 93. Reconnaissance and signal building, without change. A revised manual for reconnaissance entitled Manual of reconnaissance for triangulation has recently been issued as Special publication 225, and supersedes pt. 1 of Special publication 93. Part 2 of the older manual is covered by the present publication.
Availability:
* For Sale by Superintendent of Documents. Paper, 15c. • Sent to Depository Libraries. Item 233