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gypsum

(Encyclopedia)gypsum jĭpˈsəm [key], mineral composed of calcium sulfate (calcium, sulfur, and oxygen) with two molecules of water, CaSO4·2H2O. It is the most common sulfate mineral, occurring in many places in ...

Harte, Bret

(Encyclopedia)Harte, Bret (Francis Brett Harte) härt [key], 1836–1902, American writer of short stories and humorous verse, b. Albany, N.Y. At 19 he went to California, where he tried his hand at teaching, clerk...

rosin

(Encyclopedia)rosin or colophony, hard, brittle, translucent resin, obtained as a solid residue from crude turpentine. Usually pale yellow or amber, its color may vary from brownish-black to transparent depending o...

Ryman, Robert Tracy

(Encyclopedia)Ryman, Robert Tracy, 1930–2019, American painter, b. Nashville, Tenn. While working (1953–60) as a guard at the Museum of Modern Art in New York City he was immersed in modern and contemporary wor...

Rhodesian ridgeback

(Encyclopedia)Rhodesian ridgeback, sometimes called the African lion hound, breed of large, muscular hound developed in South Africa in the 16th and 17th cent. It stands from 24 to 27 in. (61.0–68.6 cm) high at t...

Samoyed

(Encyclopedia)Samoyed sămˈəyĕd [key], breed of hardy, muscular working dog developed in N Siberia many centuries ago. It stands from 19 to 23.5 in. (48.3–59.7 cm) high at the shoulder and weighs from 35 to 65...

Shih Tzu

(Encyclopedia)Shih Tzu shē dzo͞o [key], breed of active, alert toy dog originating in Tibet centuries ago. It stands from 8 to 11 in. (20.3–27.9 cm) high at the shoulder and weighs from 9 to 18 lb (4.1–8.2 kg...

Sarnoff, David

(Encyclopedia)Sarnoff, David, 1891–1971, American pioneer in radio and television, b. Russia. Emigrating to the United States in 1900, he worked for the Marconi Wireless Company, winning recognition as the narrat...

Red River, river, China and Vietnam

(Encyclopedia)Red River, Chinese Yuan Chiang, Vietnamese Song Hong, chief river of N Vietnam, 730 mi (1,175 km) long, rising in Yunnan prov., S China, and flowing southeast, in deep, narrow gorges, through N Vietna...

Portinari, Cândido

(Encyclopedia)Portinari, Cândido känˈdēᵺō pôrtēnäˈrē [key], 1903–62, Brazilian painter. He studied at the National School of Fine Arts in Rio de Janeiro. In 1928 a European fellowship enabled him to v...
 

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