Reviews procedures for obtaining reliable information on animal populations, other ecological features and land use generally from low-flying aircraft by direct observation or conventional photography, with reference to types of sampling unit, and the relative merits of unstratified systematic and stratified random sampling.
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Showing items 1 through 9 of 23.-
Library ResourceJournal Articles & BooksDecember, 1981
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Library ResourceJournal Articles & BooksDecember, 1981
Evaluates the usefulness of direct data collection from low-flying light aircraft for inventory & monitoring animal population & other rangeland features, viz. water bodies, vegetation structure & greenness and human settlements, for planning and management purposes.
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Library ResourceJournal Articles & BooksDecember, 1981Egypt, Morocco, United States of America, Philippines, South Africa, Iraq, Japan, Sweden, China, Myanmar, India, Senegal
This manual is designed to give detailed, practical advice on the various methodologies of organic recycling. Blue-green algae form a self-sufficient system which is capable of fixing atmospheric nitrogen in organic forms and which grows upon a free water surface. It is thus ideally suited for propagation in rice fields. The development and use of blue-green algae require special techniques. The manual summarizes the present status of algal biofertilizer technology for rice with practical information for its adoption by agricultural extension personnel and subject matter specialists.
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Library ResourceJournal Articles & BooksDecember, 1981United States of America, China, Italy
An international journal of forestry and forest industries
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Library ResourceJournal Articles & BooksDecember, 1981Africa, Eastern Africa
A study on smallholder dairy development in the East African highlands. Looks into the production systems and development constraints and priorities. Discusses genetic factors, nutrition, disease, management, labour, marketing and pricing policies. Summarises research and development experiences.
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Library ResourceJournal Articles & BooksDecember, 1981Zambia
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Library ResourceJournal Articles & BooksJuly, 1981
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Library ResourceJournal Articles & BooksDecember, 1981
Examines economic aspects of browse development, w. data on browse, wood, gum and crop production, international rate of return and cost prices on atriplex and acacia plantations in tropical Africa.
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Library ResourceJournal Articles & BooksDecember, 1981Netherlands
Afscheid prof. Hellinga
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Library ResourceJournal Articles & BooksDecember, 1981Colombia, Central America, South America
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