TY  - BOOK
AU  - Gamser,Matthew
AU  - Appleton,Helen
AU  - Carter,Nicola
TI  - Tinker tiller technical change: Technology from the people
SN  - 1-85339-061-5
U1  - 600 
PY  - 1990///
CY  - London
PB  - Intermediate technology
KW  - Applied Science
ER  -