共 11 条
- [1] BROWN A, 1938, GEOL SURV GEOL B, V12
- [2] DAVIS J, 1946, FLORIDA GEOL SURV TA, V30
- [3] GEISLER F, 1936, BUTLER U BOT STUDIES, V3, P141
- [4] Geisler Florence, 1945, BUTLER UNIV BOT STUD, V7, P65
- [5] GODWIN H., 1940, PHIL TRANS ROY SOC LONDON SER B BIOL SCI, V230, P239, DOI 10.1098/rstb.1940.0001
- [6] Keller Carl 0., 1943, BUTLER UNIV BOT STUD, V6, P65
- [7] PATRICK R, 1946, ACAD NAT SCI PHILADE, V170
- [8] Potzger J. E., 1943, SCIENCE, V98, P584, DOI 10.1126/science.98.2557.584
- [10] THARP BC, 1939, TEXAS ACAD SCI PUB N, P1