Ordovik, davrai (siste­mai) ordovik, davrai duyumi erai paleozoy bad az kembriy. Bo usuli radiologi muayyan shudaast, ki Ordovik 500 million sol muqaddam ogoz yofta, 60 million sol davom kardaast. Tahnishasthoi in davra boshand, si­stemai Ordovikro tashkil medihand. Sis­temam Ordovikro soli 1879 geologi anglis Ch. Lapuors dar Uels muqarrar namud. Nomi …

Organhoi sanitari, nigared Umuri sanitariyu epidemiologi.

Orenburg, viloyatest dar hayati Respublikai Sovetii Federativii Sotsialistii Rossiya. 7 dekabri 1934 (az soli 1938 to 1957 viloyati Chkalov) tashkil yoftaast. Masohat 124 hazor kilometr2. Aholiash 2069 hazor nafar (1979). 34 rayon, 10 shahr va 25 posyolkai tipi shahr dorad. Markazash shahri Oren­burg. Bo du ordeni Lenin (1956, 1968) mukofotonida …

Organhoi siyosi d a r Q u v v a h o i Musallahi SSSR, organ­hoi rohbarikunandai Partiyai Kommnunistii Ittifoqi Soveti dar Quvvahoi Musallahi SSSR. Vazifahoi Organhoi siyosi ijroi korhoi siyosy dar bayni khizmatchiyoni harbi, muttahid namudani onho dar atrofi KPSS va Hukumati Soveti, tarbiyai hayati shakhsi dar ruhi sadoqati …

Orekhovo-Zuevo, shahrest dar viloyati Moskvai Respublikai Sovetii Federativii Sotsialistii Rossiya, dar sohili daryoi Klyazma (shokhobi Oka). Uzeli rohi ohan. Aholiash 132 hazor nafar (1979). Orekhovo-Zuevo yake az qadimtarin markazhoi sanoati matohoi pakhtagin meboshad. Sanoati moshinsozi, khimiya va istehsoli masolehi bnnokori niz rivoj yoftaast. Instituti pedagogi, 4 tekhnikum, 2 omuzishgoh, teatri …

Ord, navi khurokvoriest, ki az doni ziroathoi gunogun hosil meku­nand. Ordro asosan az gandum istehsol menamoyand. Az javdor, jav, juvorimakka, suli, juvori, marjumak, mosh, arzan, nakhud, nakhudi chini va digar ziroat niz Ord mekoshtand. Ordro baroi tayyor kardani navhoi gunoguni non, mahsuloti qannodi va makaroni, kombikorm istifoda meba­rand; ba khuroki …

Orel, shahr, markazi viloyati Oryoli Respublikai Sovetii Federativii Sotsialistii Rossiya . Dar har du sohili daryoi Oka voqe ast. Uzeli rohi ohan Aholiash 305 hazor nafar (1979). Shahr az 3 rayon iborat. Sohahoi sanoatash: moshinsozi (istehsoli avtogreyder, moshinhoi borbardor, tajhizoti tekhnologi ba­roi sanoati bofandagi, charmu poyafzol, shisha, khurokvori va qismhoi …

Ordeni livon, tashkiloti katoliki va harbiyu siyosii risarhoi Ordeni tevton, ki soli 1237, badi shikasti Ordeni shamsherdoron dar nazdi Saule (1236) tashkil yoft. Territoriyai Ordeni livon qarib 2/z mulkhoi latjshho va estonhoro, ki risarhoi nemis dar Nazdibaltikai Sharqi zabt karda budand, dar bar megirift. Ba Ordeni livon magistr sarvari mekard, …

Oryol, viloyatest dar hayati Respublikai Sovetii Federativii Sotsialistii Rossiya. 27 sentyabr 1937 tashkll shuda­ast. Masohatash 24,7 hazor kilometr2. Aholiash- 892 hazor nafar (1979). Viloyat ba 19 rayoni mamuri taqsim shuda, 7 shahr, 13 posyolkai tipi shahr dorad. Markazash shahri Oryol. Tabiat. Viloyat dar qismi markazii balandii Miyonai Rus (balandiash ba …

Ordeni tevton, Ordeni nemis, Ordeni salibdoron, tashkiloti nemisii dinii katoli­ki va risarist, ki asrhoi 13—15 dar Evropai Sharqi tajovuzi feodaliro ba amal mebarovard. Ordeni tevton okhiri asri 12 dar Falastin dar davrai Yurishhoi salibdoron tasis yofta, soli 1198 az tarafi papa Innokenti III ba rasmiyat darovarda shud. Ordeni tevton  dar …