Wen-Tsun, Wu A theory of imbedding, immersion and isotopy of polytopes in a euclidean space Wu Wen-Tsun - Peking Science Press 1965 - XV, 291 p 24 cm Contine bibliogr Subjects--Topical Terms: Geometrie euclidianaSpatii euclidieneTopologie Dewey Class. No.: 514.12