DDC Thousands 900 - 999

900 History & geography TF1 ; TF2

901 Philosophy & theory TF1 or TF2 – TF5 or TT [DDC thus conflates four distinct relationships]

902 Miscellany

903 Dictionaries & encyclopedias TF1 or TF2 – T4b or T4a

904 Collected accounts of events Σ→iprt / TF1

905 Serial publications TF1 or TF2 – T4h

906 Organizations & management PI4 (TF1 or TF2)

907 Education, research & related topics TF1 or TF2 – PE

908 Kinds of persons treatment TF1 or TF2 ^ I

909 World history N1a – TF1

910 Geography & travel TF2 ; →ia N2 > GM0 (N2d) [as in 306.481 25]

911 Historical geography TF1 ^ TF2

912 Atlases, maps, charts & plans ΣT4d ; T4d

913 Geography of & travel in ancient world N2j specify – TF2; (→ia N2 > GM0 (N2d)) > N2j specify

914 Geography of & travel in Europe N1be – TF2; (→ia N2 > GM0 (N2d)) > N1be

915 Geography of & travel in Asia N1ba – TF2; (→ia N2 > GM0 (N2d)) > N1ba

916 Geography of & travel in Africa N1bf – TF2; (→ia N2 > GM0 (N2d)) > N1bf

917 Geography of & travel in North America N1bn – TF2; (→ia N2 > GM0 (N2d)) > N1bn

918 Geography of & travel in South America N1bs – TF2; (→ia N2 > GM0 (N2d)) > N1bs

919 Geography of & travel in other areas N1 specify – TF2; (→ia N2 > GM0 (N2d)) > N1 specify

920 Biography, genealogy & insignia I -- TF1 ; T4 ! SF ^ N2k ; SF – EI7t

921 (Optional number)

922 (Optional number)

923 (Optional number)

924 (Optional number)

925 (Optional number)

926 (Optional number)

927 (Optional number)

928 (Optional number)

929 Genealogy, names & insignia T4 ! SF ^ N2k ; SF – EI7t

930 History of ancient world to ca. 499 N2j-05 – TF1

931 China to 420 N1ccn > N2j-04 – TF1 [The remaining entries are treated as if historical; TF2 would signal geography; other links could be provided as appropriate.]

932 Egypt to 640 N1ceg > N2j-06 – TF1

933 Palestine to 70 N1cps > N2j-01 – TF1

934 India to 647 N1cin > N2j-07 – TF1

935 Mesopotamia & Iranian Plateau to 637 N1cir > N2j-07 – TF1

936 Europe north & west of Italy to ca. 499 N1be (N3nw) > N2j-05 – TF1

937 Italy & adjacent territories to 476 N1cit > N2j-05 – TF1

938 Greece to 323 N1cgr > N2j-03 – TF1

939 Other parts of ancient world to ca. 640 Specify > N2j-07 – TF1

940 History of Europe N1be – TF1

941 British Isles N1cgr + ei – TF1

942 England & Wales N1cgr – TF1

943 Central Europe; Germany N1be (N3c) – TF1 ; N1cde – TF1

944 France & Monaco N1cfr – TF1

945 Italian Peninsula & adjacent islands N1cit – TF1

946 Iberian Peninsula & adjacent islands N1ces or pt – TF1

947 Eastern Europe; Russia N1be (N3e) – TF1 ; N1cru – TF1

948 Scandinavia N1be (N3n) – TF1

949 Other parts of Europe Specify – TF1

950 History of Asia; Far East N1ba – TF1

951 China & adjacent areas N1ccn – TF1

952 Japan N1cjp – TF1

953 Arabian Peninsula & adjacent areas N1ba (N3sws) – TF1 ; N1csa – TF1

954 South Asia; India N1ba (N3s) – TF1 ; N1cin – TF1

955 Iran N1cir – TF1

956 Middle East (Near East) N1ba (N3sw) – TF1

957 Siberia (Asiatic Russia) N1cru (N3e) – TF1

958 Central Asia N1ba (N3c) – TF1

959 Southeast Asia N1ba (N3se) – TF1

960 History of Africa N1bf – TF1

961 Tunisia & Libya N1ctn – TF1 ; N1cly – TF1

962 Egypt & Sudan N1ceg – TF1 ; N1csd – TF1

963 Ethiopia & Eritrea N1cet – TF1 ; N1cer – TF1

964 Northwest African coast & offshore islands N1bf (N3nw) – TF1

965 Algeria N1cdz – TF1

966 West Africa & offshore islands N1bf (N3w) – TF1

967 Central Africa & offshore islands N1bf (N3c) – TF1

968 Southern Africa; Republic of South Africa N1bf (N3s) – TF1 ; N1cza – TF1

969 South Indian Ocean islands NT1i > NT3oi – TF1

970 History of North America N1bn – TF1

971 Canada N1cca – TF1

972 Middle America; Mexico N1bn (N3s) – TF1 ; N1cmx – TF1

973 United States N1cus – TF1

974 Northeastern United States N1cus (N3ne) – TF1

975 Southeastern United States N1cus (N3se) – TF1

976 South central United States N1cus (N3sc) – TF1

977 North central United States N1cus (N3nc) – TF1

978 Western United States N1cus (N3w) – TF1

979 Great Basin & Pacific Slope region N1cus (N3wc) – TF1

980 History of South America N1bs – TF1

981 Brazil N1cbr – TF1

982 Argentina N1car – TF1

983 Chile N1ccl – TF1

984 Bolivia N1cbo – TF1

985 Peru N1cpe – TF1

986 Colombia & Ecuador N1cco – TF1 ; N1cec – TF1

987 Venezuela N1cve – TF1

988 Guiana N1cgy – TF1

989 Paraguay & Uruguay N1cpy – TF1 ; N1cuy – TF1

990 History of other areas Specify – TF1

991 [Unassigned]

992 [Unassigned]

993 New Zealand N1cnz – TF1

994 Australia N1cau – TF1

995 Melanesia; New Guinea NT1i > NT3op (N3sw) – TF1 ; N1cpg – TF1

996 Other parts of Pacific; Polynesia NT1i > NT3op (N3se) – TF1

997 Atlantic Ocean islands NT1i > NT3oa – TF1

998 Arctic islands & Antarctica NT1i > NT3or – TF1 ; N1bt – TF1

999 Extraterrestrial worlds NT6i