Novel 7-substituted coumarin compounds and an improved method for their synthesis. [Patent application]
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Novel 7-substituted coumarin compounds and an improved method for their synthesis. [Patent application], patent, January 20, 1982; [Washington D.C.]. (https://digital.library.unt.edu/ark:/67531/metadc1185501/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.