共 7 条
[1]
Brice W. C, 1978, ENV HIST NEAR MIDDLE
[2]
BURDON DJ, 1972, ENCY GEOCHEMICAL ENV, P541
[3]
BURDON DJ, 1977, Q J ENG GEOL, V10, P97
[4]
BURDON DJ, 1982, Q J ENG GEOL LONDON, V15
[5]
GRIFFITHS JF, 1972, CLIMATES AFRICA, P75
[7]
POWERS RW, 1966, 560D US GEOL SURV PR