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CE67.R1 : buildings and installations, Brazil
(Washington, D.C; Pan American Sanitary Bureau, 1971)
CE67.R2 : edificios e instalaciones, Perú
(Washington, D.C; Oficina Sanitaria Panamericana, 1971)
CE67.R2 : buildings and installations, Perú
(Washington, D.C; Pan American Sanitary Bureau, 1971)
Programa provisional de temas
(Washington, D.C; Organización Panamericana de la Salud, 1971)
CE67.R1 : edificios e instalaciones, Brasil
(Washington, D.C; Oficina Sanitaria Panamericana, 1971)