O. Ortiz
发表
A. Devaux,
P. Kromann,
O. Ortiz,
2014,
Potato Research.
A. Janvry,
E. Sadoulet,
O. Ortiz,
2003,
Economic Development and Cultural Change.
Omar Torres,
Ricardo Orrego,
Peter Gildemacher,
2013
.
A. J. Haverkort,
O. Ortiz,
A. Haverkort,
2009
.
T. Bernet,
Scott M. Swinton,
Roberto Quiroz,
2001
.
P. Kromann,
O. Ortiz,
G. Forbes,
2014
.
O. Ortiz,
I. Barker,
I. Kashaija,
2016
.
O. Ortiz,
Sunil Kumar,
Uma Sah,
2010
.
O. Ortiz,
R. Orrego,
W. Pradel,
2008
.
Participatory Research (PR) at CIP with Potato Farming Systems in the Andes: Evolution and Prospects
R. Nelson,
O. Ortiz,
J. Bentley,
2020,
The Potato Crop.
R. Nelson,
O. Ortiz,
G. Thiele,
2019,
Journal of Integrated Pest Management.
O. Ortiz,
J. Kroschel,
R. Orrego,
2009
.
Paul C. Struik,
Cees Leeuwis,
Peter R. Gildemacher,
2009,
Potato Research.
O. Ortiz,
H. Campos,
2019
.
K. Garrett,
R. Nelson,
O. Ortiz,
2001
.
B. Lemaga,
Graham Thiele,
Ian Barker,
2009
.
K. Garrett,
R. Nelson,
O. Ortiz,
2004,
Plant disease.
Marjon Fredrix,
Ricardo Orrego,
Christopher Mundt,
2001,
Plant disease.
O. Ortiz,
V. Mares,
2017
.
A. Devaux,
P. Kromann,
O. Ortiz,
2014,
Potato Research.
O. Ortiz,
I. Kashaija,
R. Kakuhenzire,
2013
.
O. Ortiz,
2006
.
P. Kromann,
O. Ortiz,
G. Forbes,
2020
.
O. Ortiz,
G. Thiele,
C. Crissman,
2010
.
Randy J. Nelson,
Ricardo Orrego,
R. Nelson,
2001
.
O. Ortiz,
R. Orrego,
W. Pradel,
2011
.
Randy J. Nelson,
Stephen Sherwood,
Graham Thiele,
2003
.
V. K. Chandla,
O. Ortiz,
B. Singh,
2013
.
C. Mundt,
O. Ortiz,
J. Tenorio,
2001,
Plant disease.
O. Ortiz,
R. Quiroz,
S. Swinton,
2000
.
O. Ortiz,
J. Lema,
I. Kashaija,
2009
.