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Box 1
Container
Staff Only
Contains 11 Results:
High Early Strength Cement Tests on the Hetch Hetchy project, 1929-1934
File — Box: 1, Folder: 13
Identifier:
Subseries 1_1:
Dates
:
1929-1934
Found in:
California Historical Society
/
MS 980, William W. Helbush collection of water project records
/
Hetch Hetchy water supply project records
/
General records
1
2
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