. . "A.F.J" . "Ad" . "Willems" . "1926" . "A. A." . . "A. A. Willems" . "Boniface Ad Willems" . . "Ad" . . "Willems, Ad (A.F.J.)" . "Ad Willems"@en . "A.F.J Willems" . . "Boniface" . . . "Willems, Ad (Boniface Ad)" .