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- Statistics14,392
- Periodicals13,883
- Handbooks, manuals, etc8,005
- Bibliography6,360
- Congresses4,792
- Maps4,485
- Directories1,990
- Catalogs1,667
- Rules and practice1,388
- Tables610
- Databases591
- Indexes557
- Case studies530
- CD-ROMs477
- Census, 21st, 1990467
- Census, 1990443
- Abstracts416
- Cartes410
- Classification397
- Census, 20th, 1980348