Fronteras 1992, Harcourt Brace College Publishers

ISBN-13: 9780030490170

2nd edition

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Fronteras 1989, Holt McDougal

ISBN-13: 9780030214134

89th edition

Trade paperback

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Fronteras 1987, Holt McDougal

ISBN-13: 9780030040290

Unknown binding

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Fronteras 1987, Holt McDougal

ISBN-13: 9780030040283

Unknown binding

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