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Statistics in research : basic concepts and techniques for research workers / Bernard Ostle, Richard W. Mensing.
- 519.5072 O855 1975
- Ostle, Bernard,
- Iowa State University Press,
- 1975. ©1975
- Ames :
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How to make your farm pay : a practical guide for Mid-west farm operators / Carl C. Malone.
- 631.2 M2572
- Malone, Carl C. b. 1901.
- Iowa State College Press,
- 1951.
- Ames :
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Forages : the science of grassland agriculture / ed. by Maurice E. Heath, Darrel S. Metcalfe, Robert F. Barnes.
- 873
- Iowa State University Press,
- 1975.
- Ames :