<01>(4-011).  
<02>Western Europe.  
<03>(4-15).<03>(1-924.2/.3).  
<01>(4-012).  
<02>Northern Europe.  
<03>(4-17).<03>(1-924.1).  
<01>(4-012.1).  
<02>Scandinavia.  
<03>(4-17).<03>(48).<03>(1-924.14).  
<01>(4-012.2).  
<02>Baltic.  
<03>(4-11).<03>(474).  
<01>(4-013).  
<02>Southern Europe.  
<03>(4-13).<03>(1-924.6).  
<01>(4-014).  
<02>Central Europe.  
<03>(4-191.2).<03>(1-924.3/.5).  
<01>(4-015).  
<02>Eastern Europe.  
<03>(4-11).<03>(1-924.7/.9).  
<01>(470.1/.6).  
<02>Russia in Europe.  
<03>(470).  
<01>(478.9).  
<02>Moldova. Republic of Moldova (former Moldavskaya SSR).  
<03>(478).  
<01>(5-01).  
<02>Regions of Asia.  
<03>(5-11/-191.2).  
<01>(5-011).  
<02>Middle East.  
<03>(5-15).  
<01>(5-011.5).  
<02>Levant states.  
<03>(569.1/.3).  
<01>(5-012).  
<02>Far East/East Asia.  
<03>(5-11).  
<01>(5-013).  
<02>South Asia.  
<03>(4-13).  
<01>(5-014).  
<02>South-East Asia.  
<03>(5-12).  
<01>(5-015).  
<02>Central Asia.  
<03>(5-191.2).  
<01>(571.53/.62).  
<02>Baikal-Amur Main Railway zone (BAM zone).  
<01>(6-01).  
<02>Regions of Africa.  
<01>(6-011).  
<02>North Africa.  
<03>(6-17).  
<01>(6-012).  
<02>North-East Africa.  
<03>(6-18).  
<01>(6-013).  
<02>East Africa.  
<03>(6-11).  
<01>(6-014).  
<02>Central Africa.  
<03>(6-191.2).  
<01>(6-015).  
<02>West Africa.  
<03>(6-15).  
<01>(6-016).  
<02>Southern Africa.  
<03>(6-13).  
<01>179.4.  
<02>Vivisection.  
<03>179.3.  
<01>343.819.2.  
<02>Penitentiary institutions for women and girls.  
<03>343.811-055.2.  
<01>389.  
<02>Metrology. Weights and measures.  
<03>006.91.  
<01>389.1.  
<02>Weights and measures generally.  
<03>006.91.  
<01>389.14.  
<02>Adjustment, inspection, calibration of weights and measures.  
<03>351.821.<03>681.2.089.  
<01>389.15.  
<02>Systems of weights and measures.  
<03>006.915.  
<01>389.151.  
<02>The metric system.  
<03>006.915.  
<01>389.152.  
<02>The imperial (British) system.  
<03>006.915.2(410).  
<01>389.16.  
<02>Units of measurement.  
<01>389.17.  
<02>Numerical series. Geometric series. Series of sizes, formats.  
<03>006.74.<03>006.78.<03>517.521.<03>511.92.  
<01>389.2.  
<02>Standard time. Time signals.  
<03>006.924.  
<01>529.  
<02>Chronology. Calendar. Determination of time.  
<03>006.92.  
<01>529.1.  
<02>Day. Sidereal day. Solar day. Equation of time. Mean time and
true time (solar time). Causes of inequality.  
<03>006.922.<03>006.922.24.  
<01>529.2.  
<02>Periods longer than a day.  
<03>006.922.2.  
<01>529.21.  
<02>Eras.  
<03>006.922.21.  
<01>529.23.  
<02>Solar year.  
<03>006.922.22.  
<01>529.24.  
<02>Lunar year.  
<03>006.922.22.  
<01>529.25.  
<02>Planetary year.  
<03>006.922.22.  
<01>529.26.  
<02>Month.  
<03>006.922.23.  
<01>529.27.  
<02>Week.  
<03>006.922.23.  
<01>529.28.  
<02>Other short periods.  
<03>006.922.29.  
<01>529.3.  
<02>Calendars in general.  
<03>(59).<03>006.95.<03>050.9.  
<01>529.4.  
<02>Christian calendars.  
<03>006.954.  
<01>529.42.  
<02>Julian calendar. Julian reform.  
<03>006.954.2.  
<01>529.43.  
<02>Gregorian calendar. Gregorian reform.  
<03>006.954.3.  
<01>529.44.  
<02>Ecclesiastical calendar. Easter cycle (Metonic cycle). Date of
Easter.  
<03>006.954.4.  
<01>529.5.  
<02>Modern proposals for calendar reform.  
<03>006.955.  
<01>529.7.  
<02>Astronomic determination of time. Measurement of time.
Chronometry. Transcription of time. Regulation of time. The clock.  
<03>003.62:006.92.<03>681.11.  
<01>529.71.  
<02>Astronomic determination of time.  
<03>521.932.  
<01>529.75.  
<02>Systems of time. Methods of reckoning time.  
<03>006.922.<03>521.934.  
<01>529.76.  
<02>Hours. Subdivisions of the day. Transcription of time. Time
symbols.  
<03>003.62:006.92.  
<01>529.77.  
<02>Standard time. World time (Greenwich Mean Time). Zone time.
Official time. Local time.  
<03>006.924.2.  
<01>529.78.  
<02>Time-measuring instruments.  
<03>681.11.<03>681.11.057.<03>681.111.1.  
<01>546.33`131.  
<02>Sodium chloride NaCl. Table salt.  
<03>Changed in example at 546.33.  
<01>546.33`273.  
<02>Sodium tetraborate Na2B4O7. Borax.  
<03>Now example at 546.33.  
<01>621.316.12.  
<02>Direct-current networks.  
<03>621.361.1.024.  
<01>621.316.13.  
<02>Alternating-current networks.  
<03>621.316.1.025.  
<01>622.872.  
<02>Pathogenic effects of dusts.  
<03>622.87:613.633.  
<01>622.874.  
<02>Posture (working position): prevention of muscular strain, cramp
etc.  
<03>622.87:613.65.  
<01>622.878.  
<02>Industrial noise in mining.  
<03>622.87:613.644.