W. Powers
发表
W. Powers,
R. Patrick,
1962
.
A. L. Howland,
C. H. Behre,
W. Powers,
1949
.
W. Powers,
1935,
The Journal of Geology.
W. Powers,
1970,
The Journal of Geology.
C. Wentworth,
W. Powers,
1943,
The Journal of Geology.
W. Powers,
1958
.
W. Powers,
1962
.