Retrospection on the XIIIth OSTIV Congress in Vrsac, Yugoslavia Authors L. de Lange The City College of the City University of New York C. Vernon Abstract Download full text Author Biography L. de Lange, The City College of the City University of New York http://www.sci.ccny.cuny.edu/~hindman/sumvitae.pdf Downloads PDF Published 2017-12-19 Issue Vol. 12 (1972) Section Comments