Luhmann, Niklas (1927-1998)(6)
Leibniz, Gottfried Wilhelm (1646-1716)(4)
Internationale Jugendbibliothek (1949-)(3)
Alemann, Ernesto Fernando (1893-1982)(1)
All India Fine Arts and Crafts Society(1)
Amico, Victor d` (1904-1987)(1)
Asociación Recreativa Cultural Altamira (Barcelona)(1)
Association for Childhood Education International(1)
Atrium Verlag. London Office(1)
Biblioteca Benjamin Franklín(1)
Brailsford, Evamaria (1914-1988)(1)