TY  - BOOK
AU  - Ketchum, Milo S.
TI  - The Design of Walls Bins and Grain Elevators 
U1  - 721.2 
PY  - 1919///
CY  - New York : 
PB  - McGraw-Hill, 
KW  - Elevators
KW  - Walls
N1  - NN
ER  -