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rose of Sharon
(Encyclopedia) rose of Sharon, common name for several plants, especially Hibiscus syriacus, of the family Malvaceae (mallow family), and for St.-John's-wort, i.e., any species of the genus Hypericum…rotation of crops
(Encyclopedia) rotation of crops, agricultural practice of varying the crops on a piece of land in a planned series, to save or increase the mineral or organic content of the soil, to increase crop…Salamanca, University of
(Encyclopedia) Salamanca, University of, at Salamanca, Spain; founded 1218 by Alfonso IX of León, reorganized 1254 by Alfonso X of Castile and León. It has faculties of philosophy, philology,…Salisbury, John of
(Encyclopedia) Salisbury, John of: see John of Salisbury.Riga, Gulf of
(Encyclopedia) Riga, Gulf of, eastern arm of the Baltic Sea, bordering on Estonia and on Latvia. At its mouth it is nearly closed off by the Estonian island of Saaremaa. The gulf, which is frozen…Riga, Treaty of
(Encyclopedia) Riga, Treaty of, either of two peace treaties signed at Riga, Latvia. By the Treaty of Riga of 1920, between the USSR and Latvia, the USSR recognized Latvian independence. The Treaty…Right, Petition of
(Encyclopedia) Right, Petition of: see Petition of Right.right of way
(Encyclopedia) right of way, in land and air traffic and in sea navigation, rules that determine precedence in the use of traffic lanes. The rules are framed in the simplest possible terms and with…Rinns of Galloway
(Encyclopedia) Rinns of Galloway: see Galloway, Scotland.Robert of Brunne
(Encyclopedia) Robert of Brunne: see Mannyng, Robert.