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Topic
Construction equipment
Remove constraint Topic: Construction equipment
Topic
Dickson, Edward Augustus, 1879-1956
Remove constraint Topic: Dickson, Edward Augustus, 1879-1956
Topic
Hansen, Victor R.
Remove constraint Topic: Hansen, Victor R.
Topic
Sproul, Robert Gordon, 1891-1975
Remove constraint Topic: Sproul, Robert Gordon, 1891-1975
Date
1952
Remove constraint Date: 1952