TY  - BOOK
AU  - Spronsen, J. W. van.
TI  -  The periodic system of chemical elements: a history of the first hundred years 
SN  - 0444407766
U1  - 541/.901/09 
PY  - 1969///
CY  - Amsterdam,  New York
PB  - Elsevier
KW  - Periodic law
KW  - History
N1  - Includes bibliographical references and index
ER  -