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1. |
Who developed the Benkelman beam deflection studies (BBD) and in which year? |
A. | A.C Benkelman in 1935 |
B. | C.A Benkelman in 1935 |
C. | A.C Benkelman in 1953 |
D. | C.A Benkelman in 1953 |
Answer» D. C.A Benkelman in 1953 | |