Ries, Heinrich
Eckel, Edwin Clarence
Robert Latimer Bates
Roger Boltshauser
Richardson, Charles Henry
International Conference on the Conservation of Earthen Architecture (7th 1993 Silves, Portugal)
Eckel, Edwin C.
P.G. Biddle
Frederick C. Schmutz
Ottavio Cavalcanti
Jornadas sobre Restauración y Conservación de Monumentos (1989 Madrid, Spain)
Nina Jennings
Galdieri, Eugenio.
Jürgen Schneider
Helmut Lander
Newark Museum Association
G. M. Reeves
Marie Clay
Unknown Author