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الصفحة 258
The population must be large enough so that the number of non - immunes is maintained by new births . Viral diseases require larger host populations than are found in hunting and gathering groups . Such ' childhood ' diseases as ...
The population must be large enough so that the number of non - immunes is maintained by new births . Viral diseases require larger host populations than are found in hunting and gathering groups . Such ' childhood ' diseases as ...
الصفحة 441
Population growth and changes in population density in Kusasi , 1921–89 Density Census year Total population ( persons per km2 ) Source 1921 60,000 32 ( a ) 1931 150,000 53 ( a ) 1948 147,000 48 1960 174,291 57 1970 219,868 61 1984 ...
Population growth and changes in population density in Kusasi , 1921–89 Density Census year Total population ( persons per km2 ) Source 1921 60,000 32 ( a ) 1931 150,000 53 ( a ) 1948 147,000 48 1960 174,291 57 1970 219,868 61 1984 ...
الصفحة 457
to the recently rejoined discussion concerning the relationship between population growth and agricultural change . The context in which population growth is proceeding in Kusasi is presented as significantly different from that of ...
to the recently rejoined discussion concerning the relationship between population growth and agricultural change . The context in which population growth is proceeding in Kusasi is presented as significantly different from that of ...
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المحتوى
JAMES FAIRHEAD AND MELISSA LEACH | 14 |
Pastoralism biodiversity and the shaping of savanna landscapes | 37 |
Biodiversity on the farm | 52 |
حقوق النشر | |
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
activities administration African agricultural Akan argued associated authority become beliefs biodiversity Cambridge cent century chiefs colonial concept conservation context continued crop cult cultivation culture disease District diversity early East ecology economic environment established example fact farmers farming field fire forest forms Ghana groups household human important increase indigenous individual Institute interest International Kenya knowledge labour land less living LoDagaa London major means missionaries nature northern noted original past patterns period plant political population position possible practices present problems production recent refer region relations remained result rice ritual savanna season Sierra Leone slave smiths social society species spirit structure suggests traditional trees tumbura University Press vegetation village West women World