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81Article of journalPublished in 1985Repositorio Universidad Nacional de Colombia
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82Article of journalPublished in 1972Repositorio Universidad Nacional de Colombia
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83Article of journalPublished in 1977Repositorio Universidad Nacional de Colombia
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84Article of journalPublished in 1978Repositorio Universidad Nacional de Colombia
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85Article of journalPublished in 1975Repositorio Universidad Nacional de Colombia
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86Article of journalPublished in 1983Repositorio Universidad Nacional de Colombia
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87Article of journalPublished in 1968Repositorio Universidad Nacional de Colombia
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88Article of journalPublished in 1967Repositorio Universidad Nacional de Colombia
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89Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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90Article of journalPublished in 1969Repositorio Universidad Nacional de Colombia
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91Article of journalPublished in 1981Repositorio Universidad Nacional de Colombia
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92Article of journalPublished in 1967Repositorio Universidad Nacional de Colombia
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93Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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94Article of journalPublished in 1972Repositorio Universidad Nacional de Colombia
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95Article of journalPublished in 1971Repositorio Universidad Nacional de Colombia
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96Article of journalPublished in 1968Repositorio Universidad Nacional de Colombia
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97Article of journalPublished in 2001Repositorio Universidad Nacional de Colombia
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98Article of journalPublished in 1972Repositorio Universidad Nacional de Colombia
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99Article of journalPublished in 1986Repositorio Universidad Nacional de Colombia
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100Article of journalPublished in 1967Repositorio Universidad Nacional de Colombia
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