Verlag Hurk, G J v d Final Border MailPostal History and Markings of the War in Angola and along the Namibian Border 1981-1988George van den HurkHurk, G J v d 1991 Border Mail CollectionPostal History and Markings of the War in Angola and along the Namibian Border 1975-1988George van den HurkHurk, G J v d 1991 Border MailPostal history and markings of the war in Angola and along the Namibian Border 1975-1976George van den HurkHurk, G J v d 1990 More Border MailPostal History and Markings of the war in Angola and along the Namibian Border, 1977-1980George van den HurkHurk, G J v d
