Lessons for american potato growers from German experiences
Orton, W.A.
Lessons for american potato growers from German experiences - Washington 1913 - 1-12 p. - Potato Bulletin of the United States Department of Agriculture. No. 47 .
Lessons for american potato growers from German experiences - Washington 1913 - 1-12 p. - Potato Bulletin of the United States Department of Agriculture. No. 47 .