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'Leffel James d 1866' in subject
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•Leffel, James, -- d. 1866 (2)
•Dams -- Design and construction (1)
•Hydraulic turbines (1)
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1Title:  James Leffel: double turbine water wheel inventor    
 Parent:  Ohio hist. Ohio history. Columbus, Ohio, The Society, 1966. Vol. 75, no. 4, Autumn 1966. p. 200-211    
 Creator:  Becker, Carl M. 
 Publication:   
 Call #:  F34B O37P9 O37P9 v.75, no.4 
 Extent:   
 Subjects:  Leffel, James, -- d. 1866 | Hydraulic turbines
 
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2Title:  Construction of mill dams    
 Creator:  Leffel, J., & Co 
 Publication:  Noyes Press, Park Ridge, N.J,[1972] 
 Notes:  Title page erroneously attributes this work to James Leffel as an individual. Reprinted from the 1881 ed., which was published together with another work under title: Leffel's construction of mill dams, and Bookwalter's Millwright and mechanic. 
 Call #:  TC540 L494 1972 
 Extent:  152 p. : illus. ; 23 cm. 
 Subjects:  Leffel, James, -- d. 1866 | Dams -- Design and construction
 
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