A Laboratory Manual of Agriculture for Secondary Schools. Leland E. Call , E. G. Schafer

1914 ◽  
Vol 22 (1) ◽  
pp. 68-68
Science ◽  
1910 ◽  
Vol 31 (797) ◽  
pp. 544-544
Author(s):  
J. F. WOODHULL

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