- Publication venue
- Urbana, Ill. : University of Illinois Agricultural Experiment Station,
- Publication date
- 01/01/1920
- Field of study
Includes index.Cover title
- Publication venue
- Urbana, Ill. : University of Illinois Agricultural Experiment Station,
- Publication date
- 01/01/1918
- Field of study
Cover title
- Publication venue
- Urbana, Ill. : University of Illinois Agricultural Experiment Station,
- Publication date
- 01/01/1917
- Field of study
Cover title.Includes bibliographical refeerences