Сводный каталог книг

[Текст] : монография / W.B. Critchfield, E.L. Little ; U.S.D.A., Forest service. - Washington : U.S.Department of Agriculture, 1971. - 96 с. + maps. - (USDA Forest Service Miscellaneous Publication / USDA Forest Service ; 991). - Библиогр: p.21-29%Maps: p. 30-95%Index: p. 96-97. - 1-00 р.

УДК

634.9

Аннотация: The genus Pinus is one of the most widely distributed genera of trees in the Northern Hemisphere. The pines extend from the polar region to the tropics. The pines dominate the natural vegetation in many regions. The genus includes some of the most valuable timber trees in the world, and is readily distinguished frome other plants. For all of these reasons a great deal of information has accumulated about the natural distribution of the pines. This publication summarizes this information in the form of maps, and indicates the sources of information wherever possible


Доп.точки доступа:
Little, E.L.
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ИЛ-Иф (1)
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[Текст] / E.L. Little, W.B. Critchfield. - Washington : U.S.Department of Agriculture, 1969. - 51 с. : карты. - (Miscellaneous Publication ; 1144). - eng. - Библиогр.: с. 51. - 14.50 р.

УДК

634.9

Аннотация: 22 distribution maps of subdivisions of the genus PINUS L. are presented here .Important synonyms and lists of the species are included, and the slight changes in the classification of the subdivisions are explained. The maps of subdivisions combined from those of individual species show clearly and graphically the maximum natural range of all component species. These compiled maps of groups of related species may be useful in further researches, particularly in classification, geograpgical distribution, tree breeding and introduction, and evolution


Доп.точки доступа:
Critchfield, W.B.
Экземпляры всего: 1
ИЛ-ИФ (1)
Свободны: ИЛ-ИФ (1)