Robert Bartels
发表
Charles E. Billings,
Donald K. Mathews,
Edward L. Fox,
1966
.
Robert Bartels,
Denzil G. Fiebig,
1995
.
Robert Bartels,
John Edwards,
Robert Bennett,
2000
.
Robert Bartels,
Naum Jasny,
1952
.
Denzil G. Fiebig,
Robert Bartels,
R. Bartels,
1990
.
Robert Bartels,
R. Bartels,
1976
.
Denzil G. Fiebig,
Robert Bartels,
R. Bartels,
1996
.
Robert Bartels,
R. Bartels,
1977
.
Robert Bartels,
R. Bartels,
1964
.
Robert Bartels,
Towhidul Islam,
T. Islam,
2002
.
Robert Bartels,
R. Bartels,
1984
.
Denzil G. Fiebig,
Dennis J. Aigner,
Robert Bartels,
1991
.
Robert Bartels,
1981
.
Robert Bartels,
R. Bartels,
1968
.
Robert Bartels,
R. Bartels,
1985
.
Denzil G. Fiebig,
Robert Bartels,
R. Bartels,
2000
.
Michael McAleer,
Denzil G. Fiebig,
Robert Bartels,
1992
.
Robert Bartels,
R. Bartels,
1974
.
Denzil G. Fiebig,
Robert Bartels,
Arthur van Soest,
2006
.
Robert Bartels,
R. Bartels,
1951
.
Denzil G. Fiebig,
Robert Bartels,
R. Bartels,
1996
.
Robert Bartels,
R. Bartels,
1977
.
Denzil G. Fiebig,
Robert Bartels,
R. Bartels,
1996
.
Robert Bartels,
1965
.
Robert Bartels,
R. Bartels,
John Goodhew,
1981
.