TY  - BOOK
AU  - Norman,N c
TI  - Periodicity and the s - and p -  block elements
SN  - 9780195678277
U1  - 541.24 
PY  - 1997///
CY  - New Delhi
PB  - Oxford university
KW  - Chemistry
KW  - Chemical elements
KW  - Classification périodique des éléments
ER  -