共 4 条
[1]
PEARCE SC, 1947, 1946 E MALL RES STAT, P77
[2]
PRESTON A. P., 1960, JOUR HORT SCI, V35, P146
[3]
PRUNING TRIALS WITH WORCESTER PEARMAIN APPLE
[J].
JOURNAL OF HORTICULTURAL SCIENCE & BIOTECHNOLOGY,
1968, 43 (02)
:175-&
[4]
PRESTON AP, 1968, 1967 E MALL RES STA, P75