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- [2] CHRONIC OBSTRUCTIVE PULMONARY-DISEASE JOURNAL OF THE AMERICAN PHARMACEUTICAL ASSOCIATION, 1973, NS13 (12): : 690 - 697
- [8] CHRONIC OBSTRUCTIVE PULMONARY-DISEASE COMPENDIUM ON CONTINUING EDUCATION FOR THE PRACTICING VETERINARIAN, 1990, 12 (11): : 1651 - 1654