TY  - BOOK
AU  - Knapp, Brian
TI  - Chlorine, Fluorine, Bromine and Iodine
SN  - 1869860748
AV  - QD 466 .K56Cfbi 1996
U1  - HS 546.7 
PY  - 1996///
CY  - Henley-on-Thames, Oxon
PB  - Atlantic Europe Publishing Company
ER  -