Advances in Heterocyclic Chemistry
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J. G. Lombardino, U.S. Patent 3,853,862 (1974) [CA 82, 112092 (1975)]. * J. G.
Lombardino, U.S. Patent 3,927,002 (1975) [CA 84, 135693 (1976)]. *" J. G.
Lombardino, U.S. Patent 3,954,786 (1976) [CA 85, 46723 (1976)]. * J. G.
Lombardino ...