R. Crawley
发表
Thucydides,
R. Crawley,
1903
.
R. Crawley,
1910
.
Victor Davis Hanson,
Thucydides,
R. Crawley,
1996
.
R. Crawley,
S. Mobini,
D. F. Walker,
1982,
The Cornell veterinarian.
G. Benz,
R. Crawley,
J. V. Ernst,
1983,
American journal of veterinary research.
R. Crawley,
J. L. Milton,
J. V. Ernst,
1982
.
H. E. Amstutz,
R. Crawley,
J. V. Van Vleet,
1977,
Journal of the American Veterinary Medical Association.