共 29 条
[21]
RIGG GB, 1958, 44 DIV MIN GEOL STAT
[22]
LATE-QUATERNARY VEGETATIONAL HISTORY OF WESTERN INTERIOR OF CANADA
[J].
CANADIAN JOURNAL OF BOTANY-REVUE CANADIENNE DE BOTANIQUE,
1976, 54 (15)
:1793-1818
[25]
WRIGHT HE, 1969, SP11 MINN GEOL SURV
[26]
1973, WASHINGTON ANNU SUM, V77, P1
[27]
1972, WASHINGTON ANNU SUM, V76, P231
[28]
1974, WASHINGTON ANNU SUM, V78, P1
[29]
1975, WASHINGTON ANNU SUM, V79, P1