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| Utgitt
| New Brunswick, N.J. : New Jersey Agricultural Experiment Station, Rutgers University , 1927
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| Omfang
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| Opplysninger
| Issued also without thesis note and as Bulletin no. 451 of the N.J. Agricultural Experiment Station. This edition is identical with the former except for the addition of a cover having thesis note.. - Avhandling - Cornell University, 1926.
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| Emner
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