J Cairncross,Minioni E C Magnani M C Sosa H B,Palma M R Flores E A,M Fernandez Arias,Nerlove M Razin A Sadka E,Mariscal A H Molestina C J,Hacke E E Molestina C J,Butendieck N Stehr G Bonilla M V Molestina C J,M E G Guibourdenche De Cabezas,N Birdsall,L Squire,J Toussaint,