Genre
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- Congresses 1,446 canlyniadau
- Statistics 1,085 canlyniadau
- Case studies 1,039 canlyniadau
- Biography 728 canlyniadau
- Handbooks, manuals, etc 327 canlyniadau
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- Problems, exercises, etc 162 canlyniadau
- Directories 145 canlyniadau
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- Bibliography 85 canlyniadau
- Textbooks 83 canlyniadau
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- Pictorial works 71 canlyniadau
- Interviews 70 canlyniadau
- Sources 51 canlyniadau
- Anecdotes 46 canlyniadau
- Life skills guides 44 canlyniadau
- Longitudinal studies 35 canlyniadau
- Census, 1996 34 canlyniadau
- Catalogs 33 canlyniadau
- Census, 1986 31 canlyniadau
- Forecasts 29 canlyniadau
- Census, 2001 28 canlyniadau
- Statistics, Vital 27 canlyniadau
- Genealogy 26 canlyniadau
- Cases 20 canlyniadau
- Humor 17 canlyniadau
- Examinations, questions, etc 16 canlyniadau
- Rules and practice 15 canlyniadau
- Guidebooks 14 canlyniadau
- Terminology 14 canlyniadau
- Exhibitions 13 canlyniadau
- Census, 1976 12 canlyniadau
- Classification 11 canlyniadau
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- Popular works 11 canlyniadau
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- Trials, litigation, etc 8 canlyniadau
- Census, 2006 7 canlyniadau
- Constitution 6 canlyniadau
- Diaries 6 canlyniadau
- History 6 canlyniadau
- Indexes 6 canlyniadau rhagor...