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| • | LA REFERENCIA - RED FEDERADA DE REPOSITORIOS INSTITUCIONALES DE PUBLICACIONES CIENTIFICAS | |
| • | LACOMET - LABORATORIO COSTARRICENSE DE METROLOGIA | |
| • | LANGTOLANG | |
| • | LATINDEX - SISTEMA REGIONAL DE INFORMACION EN LINEA PARA REVISTAS CIENTIFICAS DE AMERICA LATINA, EL CARIBE, ESPANA Y PORTUGAL | |
| • | LATINFOCUS | |
| • | LATIPAT | |
| • | LATU - LABORATORIO TECNOLOGICO DEL URUGUAY | |
| • | LEATHERBIZ INTERNATIONAL | |
| • | LEGISALUD ARGENTINA | |
| • | LEGISLACION PROVINCIAL - MINISTERIO DE JEFATURA DE GABINETE DE MINISTROS - PROV. BUENOS AIRES | |
| • | LENNTECH - WATER TREATMENT AND AIR PURIFICATION | |
| • | LIBRARY PHILOSOPHY AND PRACTICE | |
| • | LIBRERIA HERNANDEZ | |
| • | LIBRES - LIBRARY AND INFORMATION SCIENCE RESEARCH ELECTRONIC JOURNAL | |
| • | LOGOS | |
| • | LYCOS | |
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