- ODONTOLOGÍA 6
- EDUCACIÓN PROFESIONAL 5
- Historia 4
- CONTROL DE INSECTOS 3
- Civilización 3
- EDUCACION 3
- ESTADOS UNIDOS 3
- Efectos psicologicos 3
- ABUSO DE DROGAS 2
- ABUSOS DE SUSTANCIAS-PREVENCION 2
- AGRICULTURA 2
- CIENCIAS AGRARIAS 2
- CIENCIAS BIOLOGICAS 2
- CUIDADOS INFANTILES 2
- DERECHO CIVIL 2
- DERECHOS HUMANOS 2
- ENTOMOLOGIA 2
- INSECTOS DAÑINOS 2
- Literatura estadounidense 2
- MUJERES 2
- PEDIATRÍA 2
- Toxicidad 2
- Toxicologia 2
- ABASTECIMIENTO DE AGUA 1
- ACRIDIDAE 1
- AGUAS FECALES 1
- AGUAS SUPERFICIALES 1
- ALIMENTACION INFANTIL 1
- ALUCINOGENOS 1
- ANALOGIAS DE LA COMPUTADORA 1
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2
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3
Concepts and methods of environment statistics human settlements statistics : a technical report.
Published 1988“…US,…”
Book -
4
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5
Statistical abstract of the United States 1979 /
Published 1979“…U.S. Department of Commerce,…”
Book -
6
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7
Colombia's silent crisis : one million displaced by violence /
Published 1998“…U.S. Committee for Refugees,…”
Book -
8
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9
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10
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11
Making America : the society and culture of the United States /
Published 1987“…U.S. Information Agency,…”
Book -
12
The U.S.A. answers : a guide to understanding /
Published 1961“…U.S. and World Publications,…”
Book -
13
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14
Hydrologic conditions and artificial recharge through a well in the Salem heights area of Salem, Oregon : artificial recharge of ground water /
Published 1970“…U.S. Government Printing Office,…”
Book -
15
Uso seguro de pesticidas para los trabajadores del campo = Pesticide safety for farmworkers /
Published 1985“…U.S. Environmental Protection Agency,…”
Book -
16
Utilization of sewage sludge compost as a soil conditioner and fertilizer for plant growth /
Published 1984“…U.S. Government Printing Office,…”
Book -
17
Los Atomos y la agricultura : aplicaciones de la ciencia nuclear a la agricultura /
Published 1968“…U.S. Atomic Energy Commission,…”
Book -
18
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19
Insects : the yearbook of agriculture 1952 /
Published 1952“…U.S. Government Printing Office,…”
Book -
20