TY - JOUR AU - Newton S. Hawley TI - Some Remarks concerning Surfaces in Three-space. JO - Commentarii mathematici Helvetici PY - 1967 SP - 307 EP - 313 VL - 42 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMH_1967__42_139346/ ID - CMH_1967__42_139346 ER -