000 00428nam a2200157 a 4500
005 20220518174129.0
008 960221s1955 dcuabcdjdbkoqu001 0deng d
082 _a547.035
_bN1
100 _aGokel, George W.
_916617
245 _a Crown ethers and cryptands
653 _aEthers
_aPolymerization
_acrown ethers
_acryptands
942 _cBK
942 _cBK
260 _aCambridge
_bRoyal Society of Chemistry
_c1991
003 ViArRB
999 _c249752
_d249752