41: EDUCATION AND ENLIGHTENMENT

 411: Education (on the whole), level of education (found: 50)

 412: Enlightenment, knowledge, erudition (found: 8)

 413: Educational process, progress

 414: Middle school, teacher, pupil

 415: Insitute of higher learning (technical, college), teacher, student

 410: Other

 42: CULTURE, SCIENCE, ART, RELIGION, MORALITY (found: 6)

 421: Culture (in general), level of culture (found: 155)

 422: Science and engineering (found: 2)

 423: Art, literature (found: 133)

 424: Religion (found: 284)

 425: Morality, spiritual values (found: 6)

 426: Customs, traditions, national culture (found: 31)

 427: Abnormal and paranormal phenomena (found: 5)

 420: Other

 43: HEALTH, ECOLOGY, PSYCHOLOGY

 431: Conditions of health, disease, death (found: 107)

 432: Health care system, medicine, treatment (found: 32)

 433: Condition of the environment, ecology (found: 101)

 434: Chornobyl catastrophe, consequences (found: 42)

 435: Sport, physical culture (found: 132)

 436: Psychological condition and wellness (found: 290)

 437: Stresses, traumatising events (found: 62)

 438: Personality, personal qualities (found: 174)

 430: Other

 44: MASS INFORMATION, COMMUNICATION, PUBLIC OPINION

 441: Means of mass information (on the whole) (found: 21)

 442: Press (newspapers, journals, publications) (found: 241)

 443: Radio and television (found: 82)

 444: Journalists, leading broadcasts

 445: Mass media audience (reader, listener, viewer)

 446: Mail and telephone communication

 447: Computer communication, internet

 448: Information (on the whole), being informed (found: 17)

 449: Public opinion, mass consciousness

 440: Other

 45: FAMILY AND INTERRELATIONS BETWEEN PEOPLE

 451: Structure of the family (found: 1)

 452: Marriage and divorce

 453: Sexual relations, love (found: 9)

 454: Birth and upbringing of children (found: 104)

 456: Way of life and leisure of the family, family time (found: 217)

 457: Interrelations of family and relatives (found: 79)

 458: Neighbourhood, relationship with neighbours (found: 42)

 459: Human interrelations, relationship with people (found: 36)

 450: Other

 46: SOCIAL GROUPS

 461: Social classes, strata (found: 185)

 462: Groups according to occupation, profession, qualifications (found: 199)

 463: Youth, youth problems (found: 67)

 464: Elderly, pensioners, invalids (found: 133)

 465: Condition of women in society, men (found: 2)

 466: Ethnic groups, inter-ethnic relations (found: 363)

 467: Self-interest groups, interest groups (found: 69)

 468: Sexual minorities

 469: Criminal groupings, mafia (found: 85)

 460: Other (found: 2)

 47: POPULATION AND MIGRATION

 471: Population of state (found: 16)

 472: Travel abroad, emigrants, refugees (found: 146)

 473: Population of the region, regional problems (found: 38)

 474: Inter-regional migration, change of place of residence (found: 63)

 475: City, city population (found: 2)

 476: Village, village population

 470: Other

 40: OTHER (found: 5)