TY - BOOK AU - Veldman,Wim TI - On the constructive contrapositions of two axioms of countable choice T2 - (Report 9129) AV - QA3.R46 no.8129 PY - 1976/// CY - Nijmegen PB - Catholic University, Department of Mathematics KW - Axioms KW - Functional analysis N1 - Includes bibliographical references ER -