共 9 条
- [1] BROWN A. G., 1950, Fruit Year Book, P12
- [2] FREE J. B., 1964, J HORT SCI, V39, P78
- [6] MENKE HF, 1951, 14 INT BEE KEEP C
- [7] MENKE HF, 1952, 1952 REP IOW ST AP, P66
- [8] WILLIAMS RR, 1953, 448 REP AGR HORT RES
- [9] WILLIAMS RR, 1970, 245 AGR HORT RES STN