TY  - BOOK
AU  - Needham,Joseph
TI  - SCIENCE AND CIVILISATION IN CHINA
SN  - 0521303583
U1  - 509.51 
PY  - 1986///
CY  - 
PB  - Cambridge International Science Publishing, Cambridge
KW  - Science And Civilisation -- China
N1  - Contants -V.5 Chemistry And Chemical Technology Pt.7 Milatary Technology:The Gunpowder Epic
ER  -