A study of the factors influencing the improvement of the potato
- East, Edward M. 1879-1938.
About this work
Urbana : University of Illinois Agricultural Experiment Station, 1908.
pages 375-456 : illustrations ; 23 cm.
"Submitted to the faculty of the Graduate School of the University of Illinois in partial fulfillment of the requirements for the degree of Doctor of Philosophy, March, 1907"--p. 375