00473nam a22001217a 4500020000900000082001500009100002400024245006800048260004900116300003500165500003300200650011800233  a(hb)  a547.6bHAR  aHartough, Howard D.  aThe chemistry of heterocyclic compoundsba series of monographs  aNew YorkbInterscience Publishers Inc.c1952  axvii, 533 p.b: ill.c; 24 cm.  aIncludes appendix and index.  aThiophenevThiophene and its deriva-tivesvThiophene compound vPhysical propertiesvMiscellaneous methods vRIPS