"Polymerization" . . "Cyclic Compounds" . . "Organic Compounds" . . . . . . . . "Ring-Opening Polymerization" . . . "Ring-opening polymerization : 2nd international symposium at the 173rd meeting of the American Chemical Society; New Orleans - La., March 21-23, 1977" . . . . "Ring-opening polymerization 2nd international symposium at the 173rd meeting of the American Chemical Society; New Orleans - La., March 21-23, 1977" . . . . .