half-side milling cutter
21agriculture, origins of — Introduction the active production of useful plants or animals in ecosystems that have been created by people. Agriculture has often been conceptualized narrowly, in terms of specific combinations of activities and organisms wet rice production… …
22Qatar — Qatari, adj., n. /kah tahr, keuh tahr /, n. an independent emirate on the Persian Gulf; under British protection until 1971. 665,485; 8500 sq. mi. (22,000 sq. km). Cap.: Doha. Also, Katar. * * * Qatar Introduction Qatar Background: Ruled by the… …
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