Cas Online. Available on STN International. 
The SClentific & Technical Information 
Network. /Illustr./ /Loseblattausg./ 
Vol. 1 -• -Columbus: American 
Chemical Society 1983 -• 4-0 

1. 
The registry file. The basics. 1984. 
2. 
The registry file. Building structurS.1984. 
3. 
The registry file. Conducting searches 
and examining results. 1984. 
4. 
The CA file. 1983