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ProQuest学位论文(21)
Elsevier电子期刊(3780)
在“
ProQuest学位论文
”中,
命中:
21
条,耗时:小于0.01 秒
在所有数据库中总计命中:
4,973
条
1.
Evaluating the adoption level of quality-oriented management practices by cattle producers and motivation for participation in beef quality assurance (BQA) programs.
作者:
Perry
;
Miranda V.
学历:M.S.
年:2013
2.
Improving
dairy
cattle reproduction through development of synchronization of ovulation protocols and economic decision support systems.
作者:
Giordano
;
Julio O.
学历:Doctor
年:2012
3.
Development and implementation of a pathogen specific clinical mastitis economic decision model.
作者:
Cha
;
Elva.
学历:Doctor
年:2013
4.
Cows
,cattle owners,and the USDA: Brucellosis,populations,and public health policy in twentieth century United States.
作者:
Kaplan
;
Rebecca.
学历:Doctor
年:2013
5.
Agricultural Sustainability in the Face of Climatic Change: Challenges and Opportunities.
作者:
Mukherjee
;
Deep.
学历:Doctor
年:2012
6.
Fat and Rumen Undegradable Protein for Grazing
Cows
: Effect on Composition of Milk and Quality of Cheese.
作者:
Nyoka
;
Rosemary.
学历:Doctor
年:2010
7.
The competitiveness of Ontario
dairy
farms: A farm level analysis
作者:
Xu
;
Qing Yun
关键词:
Social sciences
;
Biological sciences
学历:Master
年:2009
8.
Evaluation of the effects of a contract breeding program on reproductive efficiency in Ohio
dairy
herds
作者:
Meadows
;
Cheyney
关键词:
Social sciences
;
Biological sciences
;
Contract breed
学历:Doctor
年:2005
9.
Organic and conventional agriculture: A comparison of conventional,manure,and legume systems on soil carbon,soil nitrogen,yield,and economic returns from a long term system in the mid-Atlantic.
作者:
Woods
;
Dulani.
学历:Master
年:2009
10.
Cambios estructurales de la industria lechera de Puerto Rico durante los anos de 1974 a 2005.
作者:
Duran Novoa
;
Yisset Astrid.
学历:Master
年:2008
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