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1965-01-01 Concrete is a strong and inexpensive construction material when it is properly prepared and used. This introduction explains the importance of a good mixture and describes the materials used in the mixture. Following this are entries on: Calculating amounts of materials for concrete Mixing...
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1984-01-01 Clay occurs naturally almost everywhere in the world and is formed by the action of weathering on several kinds of rocks. This process takes many thousands of years, but it happens wherever the rocks are exposed to the natural forces of wind, water, frost, etc. The rocks change very slowly in...
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1984-01-01 People discovered bow to use clay over 20,000 years ago. The basic principles of shaping, drying, and firing clay are still the same today as they were then. The only significant changes since the discovery of clay have been the identification of additional clay materials and improvements in the...
- 1990-01-01 Goats are among the smallest domesticated ruminants and have served mankind longer than cattle or sheep. They thrive in arid, semitropical, or mountainous countries. More than 460 million goats in the world produce over 4.5 million tons of milk and 1.2 million tons of meat annually, besides...
- 1985-01-01 The dairy industries in many industrialized countries have developed elaborate facilities in an effort to: (1) save labor, which is plentiful and inexpensive in most developing countries; (2) provide protection for both the cattle and their caretakers from cold in winter; and (3) provide...
- 1984-01-01 Since ancient times, chickens, ducks, and geese have served farming communities by gleaning the fields of grain that otherwise would be lost; picking up grain that is dropped by the wayside in threshing, drying, and transportation; making productive use of the scraps from the family table; and,...
- The brooder is heated by a regular electric light bulb, placed under the brooder floor. Depending on the temperature rise required, the wattage of the light bulb will have to be chosen by experimentation. The metal floor and roof prevent predators such as rats from entering the brooder. If...
- 1977-01-01 This manual presents an overview of the entire process of raising rabbits--from selecting healthy animals to preparing proper foods to treating disease. A separate section of the manual includes step-by-step procedures for the construction of a hutch unit to house two does and one buck.
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2008-01-01 Endogenous development is mainly based on local strategies, values, institutions and resources. Therefore priorities, needs and criteria for development may differ in each community and may not always be the same as those of the development worker. Key concepts within endogenous developmentare:...
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2010-01-01 This draft methodological guide draws from existing COMPAS documents. However it was generated primarily from the field experiences of COMPAS Africa partners at the methodology and assessment workshop organised in Wa, Ghana, from 12-21 April 2010. In this workshop, all COMPAS Africa partners...