1. TRIG/20
- Reference (shelfmark):
- TRIG/20
- Title:
- Anglo-Belgian Boundary Commission 1927-1933. Congo-Zambesi Watershed Section. Cross-levelling. Level Observation Books (field copies).
- Scope & Content:
- Level observation books (numbered 28 to 44); some volumes are recorded in traverse books, but the data within are level values. Used in the compilation of Geographical Section, General Staff No. 4044, 7 sheets at scale 1:250,000 dated 1941 filed at Maps X.6262.
- Collection Area:
- Map Collections
- Languages:
- English
- Date Range:
- 1930-1931
- Extent:
-
17 volumes