00601nam a2200217 a 450000100060000000300080000600500170001400800410003103500190007204000320009104100080012308200260013110000250015724500450018226000310022730000340025849000260029250000190031865000200033783000260035753346BD-RjUL20211209075940.0161005s1969    enka     b    001 0 eng a  a(BD-RjUL)53466  aDLCcDLCdDLCdBD-RjULbeng  aeng00a541.224223bPRC 19691 aPress, Ronald Edwin.14aThe chemical electron /cby R. E. Press.  aHarlow :bLongmans,c1969.  avii, 114 p. :bill. ;c22 cm.0 aConcepts in chemistry  aIncludes Index 0aChemical bonds.  aConcepts in chemistry