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- [5] How many residents shall we train - The situation in Germany TRAINING IN NEUROSURGERY, 1997, 69 : 47 - 54
- [6] How many residents shall we train? The Netherlands experience TRAINING IN NEUROSURGERY, 1997, 69 : 33 - 35
- [7] How many residents shall we train? The Iberian experience TRAINING IN NEUROSURGERY, 1997, 69 : 43 - 44
- [8] HOW MANY IS TOO MANY - COMMENT JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION, 1945, 106 (818): : 302 - 302
- [10] HOW MANY CATEGORIES FOR RESPONDENT CLASSIFICATION JOURNAL OF THE MARKET RESEARCH SOCIETY, 1982, 24 (04): : 345 - 346