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References
1.
Schoonover, I.C.
,
Souder, WM
, AND
Beall, J.R.
, J. A. D. A. , 29 : 1825 , 1942 .
2.
Romnes, A.F.
, AND
Skinner, E.W.
, Northwestern University Bulletin , 38 : 19 , 1938 .
3.
Souder, WM
, AND
Schoonover, I.C.
, J. A. D. A. , 28 : 1278 , 1941 .