P. Bullock
发表
J. M. Janusz,
P. Bullock,
1992,
3D Africon Conference. Africon '92 Proceedings (Cat. No.92CH3215).
P. Bullock,
P. Bullock,
C. P. Murphy,
1977
.
Mark Rounsevell,
Keith Goulding,
Paul G. Jarvis,
1996
.
Mark Rounsevell,
Wolfgang Cramer,
Steven P. Hamburg,
1996
.
P. Bullock,
P. Bullock,
A. Thomasson,
1979
.
P. Bullock,
P. Bullock,
C. P. Murphy,
1977
.
P. Bullock,
P. Bullock,
C. P. Murphy,
1980
.
Mark Rounsevell,
P. Bullock,
M. Rounsevell,
1999
.
Mark Rounsevell,
P. Bullock,
S. Armstrong Brown,
1995
.
Stephen H. Hallett,
Ian Baillie,
P. Bullock,
2006
.