00389nam a2200109Ia 4500008004100000040001100041100001900052245012800071260005700199300001300256300001000269251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aDr. T. Stephen 0aTetrahedron LettersbThe International Journal For the Rapid Publication of Preliminary Communications in Organic Chemistry  cJuly 10-September 10, 1956bAcademic PressaNew York  aP. 1-544  bV. 50