Gender studies, gender groups 1,078
General & world history 765
Geography 492
Gender studies: women 314
General studies 291
Globalization 253
Grammar, syntax & morphology 209
Genetics (non-medical) 153
Gay & Lesbian studies 134
Geopolitics 124
Geographical information systems (GIS) & remote sensing 104
Geology & the lithosphere 90
Graphical & digital media applications 71
Gynaecology & obstetrics 63
Geological surface processes (geomorphology) 60
Geriatric medicine 50
German 44
Geophysics 38
Genocide & ethnic cleansing 37
Gender & the law 35
Gender studies: men 35
Gastroenterology 34
General surgery 32
Germany 32
Government powers 29
Gardening: growing fruit & vegetables 22
Games development & programming 21
Geometry 19
Graphic novels: superheroes & super-villains 19
Geochemistry 16
Grammar & vocabulary 16
Graphic design 16
Graphic novels: history & criticism 16
GBC 15
Greece 14
GL 12
GTB 11
Game theory 11
Geographical discovery & exploration 11
GPS 10
Gay studies (Gay men) 10
Gastrointestinal & colorectal surgery 9
Geriatric nursing 9
Gender studies: transsexuals & hermaphroditism 8
General practice 8
Graphic novels: literary & memoirs 8
Groups & group theory 8
GLMA 7
GTF 7
Genetic engineering 7
Genealogy, heraldry, names & honours 6
Graphic novels 6
Gardening 5
Graphics programming 5
General encyclopaedias 4
Graphic novels: Manga 4
GTJ 3
Garden design & planning 3
Gardens (descriptions, history etc) 3
Gas technology 3
Geographical maps (specialist) 3
GLC 2
GLP 2
GTC 2
Gambling: theories & methods 2
Gas industries 2
Germanic & Scandinavian languages 2
Ghana 2
Giving up smoking 2
Graffiti & street art 2
Graphology 2
Grasslands, heaths, prairies, tundra 2
GLF 1
GLH 1
GPF 1
GPFC 1
GPH 1
GPS, LAQ 1
GT 1
GTB,JWA,JPSF,,JWLP 1
GTB,JWA,JPSF,JWLP 1
GTE 1
GTF, JFFS, JMG, JPW, JFSJ, JHBC, JPWH, JKSN1 1
GTJ, JPS, JWA, JWLP, LNDK, 1QFE 1
GTJ,JPA,LAB, JWLP, HPQ, HPS, 1QFE 1
Gene therapy 1
General fiction (Children's / Teenage) 1
Geodesy & surveying for maps & charts 1
Geographical Qualifiers 1
Gloucestershire 1
Golf 1
Gravity 1
Green lifestyle & self-sufficiency 1