共 16 条
- [1] BRETHOUR JR, 1959, 363 KANS AGR EXPT ST
- [2] BRETHOUR JR, 1958, 359 KANS AGR EXPT ST
- [5] FRENCH FRANK E., 1958, IOWA STATE COLL JOUR SCI, V33, P119
- [6] HARRIS EMMETT D., 1959, JOUR ECON ENT, V52, P425, DOI 10.1093/jee/52.3.425
- [7] HOWELL DE, 1958, OKLAHOMA STATE U E B, V513, P3
- [8] JONES C. M., 1959, JOUR ECON ENT, V52, P488, DOI 10.1093/jee/52.3.488