. . . . . "Collagenase : [based on the papers presented at the 1. Interdisciplinary symposium on collagenase, held at the Columbia University College of Physicians and Surgeons, New York, Febr. 5, 1970]" . "Collagenase : [this volume is based on the papers presented at the First Interdisciplinary Symposium on Collagenase, held at the Columbia University College of Physicians and Surgeons on February 5, 1970 ...]" . . "Collagenase" . . . . . "Interdisciplinary Symposium on Collagenase (1 : 1970 : New York)" . . .