Search for: [Description = "tytuł równoległy\: Tautomerism of 2\-hydrazino\-4\-phenylthiazole↔4\-phenylthiazol\-2\-one hydrazone system \: the derivatives of acids. II, \(4\-phenyl\-3\-R\-thiazol\-2\-ylidene\)\- and ß\-methyl\-ß\-\(4\-phenylthiazol\-2\-yl\)\-hydrazides of picolinic, nicotinic, isonicotinic acid"]

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