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8
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Peru / [prep. by Mary M. Shirley, José Luis Restrepo].
- 878.9
- Organisation of American states. Executive secretariat for economic and social affairs,
- 1979.
- Washington, DC :
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México / [prep. por Luis R. Luis].
- 874
- Organización de los estados americanos. Secretaria ejecutiva para asuntos económicos y sociales,
- 1979.
- Washington, DC :
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Chemical soil stabilization = Estabilización quÃmica de suelos = La stabilisation chimique des sols / Transportation research board, Commission on sociotechnical systems, National research council.
- National Academy of Sciences,
- 1979.
- Washington, DC :
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Investigation and development of materials resources = Investigación y desarrollo de recursos de materiales = Investigation et développement des gisements de matériaux routiers / prep. by Transportation research board, Commission on sociotechnical systems, National research council.
- National Academy of Sciences,
- 1979.
- Washington, DC :
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Compaction of roadway soils = Compactación de suelos viales = Le compactage des sols routiers / prep. by Transportation research board, Commission on sociotechnical systems, National research council.
- National Academy of Sciences,
- 1979.
- Washington, DC :
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Control of erosion = Control de érosion = Contrôle de l'érosion / prep. by Transportation research board, Commission on sociotechnical systems, National research council.
- National Academy of Sciences,
- 1979.
- Washington, DC :
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Road gravels = Gravas = Les graviers / prep. by Transportation research board, Commission on sociotechnical systems, National research council.
- National Academy of Sciences,
- 1979.
- Washington, DC :
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Scholar's guide to Washington, D.C. for Latin American and Caribbean studies / Michael Grow ; consultants William Glade, Martin C. Needler, Joseph S. Tulchin ; ed. Zdenek V. David.
- 875
- Smithsonian Institution,
- 1979.
- Washington, DC :