W. Visser
发表
W. Visser,
1952
.
W. Visser,
F. Mischgofsky,
F. Weststrate,
1993
.
W. Visser,
F. Rodewijk,
1990
.
W. Visser,
F. Mischgofsky,
F. Weststrate,
1990
.
W. Visser,
1952,
Atlas of Yellowstone.
W. Visser,
1937
.
W. Visser,
1959
.
M. Loxham,
W. Visser,
D. Pereboom,
1989
.
Paul Bardos,
Ian Martin,
I. Martin,
1996
.
W. Visser,
1950
.
W. Visser,
1966,
Soil Science Society of America Journal.