共 12 条
[2]
Chamberlain C.J., 1935, GYMNOSPERMS STRUCTUR
[3]
CHAMBERLAIN CJ, 1919, LIVING CYCADS
[4]
COOPER AG, 1966, 1244E US GEOL SURV B
[5]
COOPER AG, 1964, AM ASSOC PETROLEUM G, V48, P1581
[6]
EAMES AJ, 1955, ARNOLD ARBORETUM, V36, P165
[7]
Florin R., 1938, PALAEONTOGR ABT B, V85, P1
[8]
Florin R., 1951, ACTA HORI BERGIANI, V15, P285
[9]
FLORIN RUDOLF, 1934, SVENSK BOT TIDSKR, V28, P468
[10]
KING P, 1935, AM ASS PETROL GEOL B, V19, P1544