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Library of Congress
13
Library Corporation
8
California (E.U.A.)
7
SilverPlatter International (Estados Unidos)
6
E.U.A National Bureau of Standards
5
SilverPlatter Information (Estados Unidos)
5
H.W. Wilson Company (Estados Unidos)
4
Library of Congress Cataloging Distrubution Service
4
Modern Language Association of America
4
Organismo Internacional de Energía Atómica
4
American Library Association
3
California (E.U.A.) Dept. of Education
3
California (E.U.A.) Office of State Controller
3
California (Estados Unidos)
3
Council of National Library Associations
3
Diaz, Albert James,
3
E.U.A Bureau of American Ethnology
3
E.U.A Bureau of Employment Security
3
E.U.A Bureau of Statistics (Dept. of Commerce and Labor)
3
E.U.A Dept. of State
3
E.U.A Patent Office
3
Gale Research Company
3
Naciones Unidas
3
R.R. Bowker Co. (editores : New York)
3
R.R. Bowker Company (New York)
3
Rockefeller Foundation
3
Suter, Max
3
Unesco
3
Wright, Wyllis Eaton, 1903-,
3
Academic Press (New York)
2
Art Directors Club
2
Association of American University Presses
2
California (E.U.A.) Bureau of Criminal Statistics
2
California (Estados Unidos) Bureau of Print
2
California (Estados Unidos) Code Commission
2
California (Estados Unidos) Dept. of Finance Print. Division
2
California Office of State Controller
2
Canadá Dept. of Mines Mines Branch
2
Ceilán
2
Ceilán Dept. of Census and Statistics
2
Columbus Memorial Library
2
Dan Golenpaul Associates (New York)
2
Díaz Bautista, Alejandro
2
E.U.A
2
E.U.A Bureau of Statistics (Treasury Dept.)
2
E.U.A Coast and Geodetic Survey
2
E.U.A Hydrographic Office
2
E.U.A Light-house Board
2
E.U.A Public Health Service
2
El Colegio de la Frontera Norte. Departamento de Estudios Económicos
2
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