Barber, Benjam¡n R.
Facetas ; No. 53 - Washington-XXU : International Communicational Agency United States of America, 1981. - p. 74-76 : il. - Trimestral - No. 53(1981). - Facetas ; No. 53 . - International Communicational Agency United States of America. .
Facetas ; No. 53 - Washington-XXU : International Communicational Agency United States of America, 1981. - p. 74-76 : il. - Trimestral - No. 53(1981). - Facetas ; No. 53 . - International Communicational Agency United States of America. .