304: Factors affecting social behavior: <various> → S or <various> [Note: This is the sort of vague classification we want to overcome.
304.2 Human ecology: N or subdivisions → <various>
304.23 Space and time factors: N1 →; N2 →
304.25 Climatic and weather factors: NC →
304.27 Biological (non-human) factors: F →
304.28 Environmental abuse (effects of): EO → N or subdivisions →
Greenhouse effect: EO → NC1
304.5 Genetic factors: G →
304.6 Population: HP →
304.61 Population characteristics: HP subdivisions
Density: HP ~ N1 →
304.62 Growth and decline: HP↑ →
304.63 Births: HF →
Fertility: HF →
Birth interval: HF2 →
Family size: HP ~ SF →
304.63 Deaths (Mortality): HM →
Life expectancy HM1 →
304.66 Demographic effects of population control efforts: PI1 →rs HP
304.663 Genocide, Ethnic cleansing: PI1 →rsgm HP↓ (SE)
304.666 Family planning (birth control): PI1 →rs HF; T →rs HF
304.667 Abortion: I or PI1 →ga HF0
304.668 Infanticide: I or PI1 →ga SA1
304.8 Movement of people: HG →
304.81 Causes: <various> → HG →
304.82 International movement of people: HG1
305: Social groups: S
[Dewey has a long list of causal links classed elsewhere.]
305.2 Age groups: SA
305.23 Young people: SA5
81 (Boys): SA5 (SG2); 82 (Girls): SA5 (SG1)
869 2 (Antisocial children) : SA5 (IS7)
869 4 (Disadvantaged children) SA5 (SOC5)
868 45 Abandoned, abused, orphaned: SA5 (IR1↓)
305.231 Child development: SA5↑
305.232 Infants: SA1
305.233 Children 3 to 5: SA2
305.234 Children 6 to 11: SA3
305.235 Young people 12 to 20: SA4
Males: SA4 (SG2) Females SA4 (SG1)
Development : SA4↑
305.24 Adults: SA6
305.242 Young adults: SA7
305.244 Middle age SA8
305.26 Seniors: SA9
305.3 Men and women: SG
305.31 Men: SG2
305.4 Women: SG1 [Note: both can be coded by age group, disability, marital status (SM) and so on, as well as location]
305.42 Social role and status of women: SG1 → IH1
Discrimination: PI1 or P2f or EO9\ SO →is SG1
Feminism: PL (SG1)
Women’s movements: PI4 (SG1) or SC1f (SG1)
305.43: Women’s occupations: SO – SG1
Women in particular occupations: SG1 (SO yyy)
305.48 Particular types of women: SG1 (<various>) [Dewey codes for religion, language, ethnic, class.]
305.5 Social classes: SOC
305.51: General principles of social classes: SOC
305.512: Principles of stratification: SO → ED; SL (SO)
305.512 2 Caste systems: SOC1
305.513 Social mobility: SO↑
305.52: Upper class: SOC2
305.522 By birth: SOC2 (SF)
305.523 By economic status: SOC2 (ED)
305.524 By political status: SOC2 (P)
305.5: Middle class: SOC3
305.53: Intelligentsia: SOC3 (PE)
305.53: Professional classes : SO1
305.54 : Managerial and entrepreneurial classes : SO3; SO2
305.556: White collar classes: SO4
Clerks, office workers
305.56: Lower, alienated, excluded classes: SOC5
305.565: Culturally disadvantaged (means uneducated): SOC5 (PE)
305.568: Alienated and excluded classes: SOC5
305.562: Working class: SOC4 [Note: This should not be a subset of the disadvantaged class as in Dewey.]
305.563: Agricultural lower classes: SO6h
305. 568 8: Dalits: SOC5 (SOC1)
305.569: Poor people: SOC5 (ED)
305.569 2 Homeless: SOC5 ^ NB2
305.6: Religious groups: PI4 (CR) [since religions are generally formally organized]
[Like Dewey, the coding of different religions from CR can be used to identify particular types of religious groups]
305.7: Language groups: SE (CL) [Ditto]
305.8: Ethnic and national groups: SE [Ditto]
Racism, ethnocentrism: SL (SE)
Multiculturalism: →rc CΣ
305.9: Occupational and miscellaneous groups: SO; S
Occupational mobility: SO↑ [same as social mobility above]
305.906 91: Persons with status defined by change in residence (runaways, migrant workers, tramps): SOC5 (HG)
305.906.912: Immigrants: I (HG1) or SOC5 (HG 1)
305.906.914: Displaced persons, refugees: SOC5 (→gm HG1)
305.906 918: Nomads: SOC5 (HG3)
305.906 92: Antisocial and asocial persons: I or SOC5 (IS7)
305.906 94: Unemployed persons: I or SOC5 (EO↕2)
305.906 95: Victims of war: SOC5 (PI1 ↔rxgm PI1)
305.906 97: Veterans: SO7a
305. 908: Persons with disabilities, gifted persons: SD ; I (II↑)
Blind: SD (GA3a)
Deaf: SD (GA3b)
305.909: Generalists: SOΣ
305.91 -.99: Persons by occupation (non-generalists): SO yyy