TY  - BOOK
AU  - Ketelaar, J.A.A.
TI  - Chemical constitution : an introduction to the theory of the chemical bond
PY  - 1958///
CY  - Amsterdam
PB  - Elsevier
UR  - http://krc.clri.res.in:80/cgi-bin/koha/opac-detail.pl?biblionumber=2082
ER  -