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[1]
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[2]
Baur G. N., 1964, Unasylva, V18, P18
[4]
BLACKMAN GE, 1951, ANN BOT-LONDON, V15, P64
[8]
GRIME JP, 1966, LIGHT ECOLOGICAL FAC, P187
[10]
JONES E. W., 1950, EMPIRE FOREST REV, V29, P108