TY  - GEN
AU  - Hessenbruch,Arne
TI  - Encyclopedia of the history of science: a reder's guide 
SN  - 8186830421 (hbk.) vol.set.12
AV  - Q121 .E53 2001
U1  - 509 
PY  - 2002///
CY  - New Delhi
PB  - Penatgon Press
KW  - Physical science Encyclopedias
KW  - Science History Encyclopedias
ER  -