Author: S. K. Sinha
Publisher:
ISBN:
Category : Crops
Languages : en
Pages : 730

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Book Description

Author: Army Medical Library (U.S.)
Publisher:
ISBN:
Category : Bibliography
Languages : en
Pages : 1150

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Book Description
"Collection of incunabula and early medical prints in the library of the Surgeon-general's office, U.S. Army": Ser. 3, v. 10, p. 1415-1436.

Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Incunabula
Languages : en
Pages : 1148

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Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages : 432

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Author: National Library of Medicine (U.S.)
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages :

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Book Description
First multi-year cumulation covers six years: 1965-70.

Author: United States. Department of Agriculture
Publisher:
ISBN:
Category :
Languages : en
Pages : 862

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Author:
Publisher: Allied Publishers
ISBN: 9788177640212
Category : Botany
Languages : en
Pages : 608

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Book Description

Author:
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 1384

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Book Description

Author: T. W. Freeman
Publisher: Bloomsbury Publishing
ISBN: 1474230822
Category : History
Languages : en
Pages : 180

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Book Description
An annual collection of studies of individuals who have made major contributions to the development of geography and geographical thought. Subjects are drawn from all periods and from all parts of the world, and include famous names as well as those less well known: explorers, independent thinkers and scholars. Each paper describes the geographer's education, life and work and discusses their influence and spread of academic ideas. Each study includes a select bibliography and brief chronology. The work includes a general index and a cumulative index of geographers listed in volumes published to date.

Author: S. Mohan Jain
Publisher: Springer Science & Business Media
ISBN: 9401718628
Category : Science
Languages : en
Pages : 239

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Book Description
Since the beginning of agricultural production, there has been a continuous effort to grow more and better quality food to feed ever increasing popula tions. Both improved cultural practices and improved crop plants have allowed us to divert more human resources to non-agricultural activities while still increasing agricultural production. Malthusian population predictions continue to alarm agricultural researchers, especially plant breeders, to seek new technologies that will continue to allow us to produce more and better food by fewer people on less land. Both improvement of existing cultivars and development of new high-yielding cultivars are common goals for breeders of all crops. In vitro haploid production is among the new technologies that show great promise toward the goal of increasing crop yields by making similar germplasm available for many crops that was used to implement one of the greatest plant breeding success stories of this century, i. e. , the development of hybrid maize by crosses of inbred lines. One of the main applications of anther culture has been to produce diploid homozygous pure lines in a single generation, thus saving many generations of backcrossing to reach homozygosity by traditional means or in crops where self-pollination is not possible. Because doubled haploids are equivalent to inbred lines, their value has been appreciated by plant breeders for decades. The search for natural haploids and methods to induce them has been ongoing since the beginning of the 20th century.