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Handbook for information systems and services |
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| APA | (1977). Handbook for information systems and services, Paris: Unesco. | ||||
| MLA | Handbook for information systems and services. Paris: Unesco, 1977. | ||||
| Harvard | 1977. Handbook for information systems and services. Unesco, | ||||
| Chicago | Handbook for information systems and services. Unesco, 1977. | ||||