TY  - GEN
AU  - Cull , R.G.
AU  - Drake , W.A.
TI  - Concepts of science 3
SN  - 0852265301
U1  - 501 
PY  - 1790///
CY  - New Deihi
PB  - Wiley Eastern
KW  - PHILOSOPHY AND THEORY
KW  - NATURAL SCIENCES
ER  -