P. Olafson
发表
P. Olafson,
A. MacCallum,
F. H. Fox,
1946,
The Cornell veterinarian.
W. Hansel,
P. Olafson,
K. Mcentee,
1955,
The Cornell veterinarian.
J. Loosli,
S. Asdell,
P. Olafson,
1945
.
K. Mcentee,
P. Olafson,
1953,
Fertility and sterility.
W. Hansel,
P. Olafson,
K. Mcentee,
1951,
The Cornell veterinarian.
P. Olafson,
K. Mcentee,
1951,
The Cornell veterinarian.
P. Olafson,
1947,
The Cornell veterinarian.
P. Olafson,
1940
.
C. Rickard,
P. Olafson,
1947,
The Cornell veterinarian.
W. Hansel,
P. Olafson,
K. Mcentee,
1953,
The Cornell veterinarian.