R. Butterfield
发表
R. Butterfield,
2001
.
R. Butterfield,
R. T. Berg,
1976
.
R. Butterfield,
E. R. Johnson,
1971,
The Journal of Agricultural Science.
R. Butterfield,
W. J. Pryor,
1967,
Australian veterinary journal.
Rex M. Butterfield,
R. Butterfield,
1988
.
R. Butterfield,
1966,
Australian veterinary journal.
R. Butterfield,
1965,
Research in veterinary science.
R. Butterfield,
1966,
Research in veterinary science.
R. Butterfield,
1964
.
N. D. May,
R. Butterfield,
1983
.
R. Butterfield,
2017
.
R. G. Matthews,
R. Butterfield,
R. T. Ropiha,
1967,
Australian veterinary journal.
R. Butterfield,
1966
.
C. Pemberton,
R. Butterfield,
2011
.
R. Butterfield,
1970,
Australian Veterinary Journal.
R. Butterfield,
1955
.
R. Butterfield,
R. T. Berg,
W. J. Pryor,
1966,
Research in veterinary science.