Browsing Dhananjayrao Gadgil Library by Author "Roekel, H Van"
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Questions and answers concerning pullorum disease (Bulletin No. 284, May 1932)
Roekel, H Van; Agricultural Experiment Station, Massachusetts (Massachusetts State College, Amherst, 1932) -
Study of Variation of salmonella pullorum
Roekel, H Van (Massachusetts Agriculture Experiment Station, Amherst, 1935)