全文获取类型
收费全文 | 89篇 |
免费 | 8篇 |
国内免费 | 1篇 |
专业分类
林业 | 1篇 |
农学 | 2篇 |
28篇 | |
综合类 | 38篇 |
农作物 | 3篇 |
水产渔业 | 2篇 |
畜牧兽医 | 22篇 |
植物保护 | 2篇 |
出版年
2022年 | 1篇 |
2018年 | 2篇 |
2017年 | 1篇 |
2016年 | 3篇 |
2014年 | 1篇 |
2013年 | 5篇 |
2012年 | 2篇 |
2011年 | 3篇 |
2010年 | 4篇 |
2009年 | 1篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2004年 | 6篇 |
2003年 | 5篇 |
2002年 | 1篇 |
2000年 | 1篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 3篇 |
1996年 | 3篇 |
1995年 | 7篇 |
1991年 | 6篇 |
1989年 | 3篇 |
1988年 | 2篇 |
1986年 | 1篇 |
1985年 | 1篇 |
1979年 | 1篇 |
1973年 | 1篇 |
1969年 | 1篇 |
1944年 | 1篇 |
1943年 | 1篇 |
1939年 | 1篇 |
1934年 | 1篇 |
1932年 | 1篇 |
1930年 | 1篇 |
1929年 | 2篇 |
1928年 | 1篇 |
1927年 | 1篇 |
1924年 | 1篇 |
1922年 | 1篇 |
1920年 | 1篇 |
1918年 | 1篇 |
1917年 | 2篇 |
1916年 | 3篇 |
1912年 | 1篇 |
1910年 | 2篇 |
1909年 | 2篇 |
1908年 | 1篇 |
1907年 | 1篇 |
排序方式: 共有98条查询结果,搜索用时 24 毫秒
1.
2.
3.
4.
Kahn S Geale DW Kitching PR Bouffard A Allard DG Duncan JR 《The Canadian veterinary journal. La revue veterinaire canadienne》2002,43(5):349-354
Vaccination of susceptible animals against foot-and-mouth disease (FMD) is a well established strategy for helping to combat the disease. Traditionally, FMD vaccine has been used to control a disease incursion in countries where the disease has been endemic rather than in countries considered free of the disease. In 2001, the use of vaccine was considered but not implemented in the United Kingdom (1), whereas vaccine was used to help to control FMD in The Netherlands (2,3). Canadian contingency plans provide for the use of vaccine; Canada is a member of the North American Foot-and-Mouth Disease Vaccine Bank, which could supply vaccine if needed. This article explains why Canada might use FMD vaccine to combat an outbreak and the factors that are relevant to the disposal of vaccinated animals and their products. It concludes that vaccination is an important mechanism in Canada's preparedness for an outbreak of FMD and that products from vaccinated animals are safe for human consumption. 相似文献
5.
6.
7.
8.
Allard HA 《Science (New York, N.Y.)》1909,30(770):453-454
9.
10.
Disomic wheat-barley addition lines carrying a full hexaploid set of chromosomes of the wheat cultivar Chinese Spring, plus a pair of either chromosome 1, 2, 3, 4, 6, or 7 from the barley cultivar Betzes, were assayed electrophoretically. Comparisons of zymograms of each addition line with the Chinese Spring wheat and Betzes barky parents of the addition lines gave direct (presumptive in the case of chromosome 5) evidence of the chromosomal locations of nine enzyme loci which have been useful genetic markers in studies of the population genetics, ecogeneties and breeding of barley. Previously reported chromosome locations of several loci were confirmed and evidence was presented for the existence and probable chromosome locations for additional enzyme loci. 相似文献