TY  - BOOK
AU  - Gokel George W
TI  - Crown ethers and cryptands
T2  - Monographs in supermolecular chemistry series
U1  - E5,281:218, N1 
PY  - 1991///
CY  - Cambridge
PB  - Royal society of chemistry      
KW  -  Organic chemistry
KW  - Stereochemistry
ER  -