D. Pickrell
发表
D. Pickrell,
1992
.
D. Pickrell,
1985
.
Paul Schimek,
D. Pickrell,
1999
.
D. Pickrell,
1983
.
C. Oster,
D. Pickrell,
1986
.
Don H Pickrell,
Beth Deysher,
D. Pickrell,
1997
.
Donald Shoup,
Don H Pickrell,
D. Shoup,
1980
.
D Pickrell,
D. Pickrell,
J.P. Rodrigue,
2020,
International Encyclopedia of Human Geography.
Mohan M. Venigalla,
Don H Pickrell,
M. Venigalla,
2002
.
Roger L. Wayson,
Kevin Green,
Don Pickrell,
2003
.
Mohan M. Venigalla,
Don H Pickrell,
M. Venigalla,
1997
.
Don H Pickrell,
D. Pickrell,
1986
.
Paul Schimek,
Don Pickrell,
Paul Schimek,
1999
.
D H Pickrell,
D. Pickrell,
1989
.
D H Pickrell,
R. Lang,
D. Pickrell,
1998
.
Donald Shoup,
Don H Pickrell,
D. Shoup,
1978
.
C. Oster,
D. Pickrell,
1988
.