Genre
Statistics
Electronic books
443
Databases
81
Internet videos
48
Printed ephemera
42
Census data
24
Congresses
21
CD-ROMs
20
Maps
20
Educational films
19
Periodicals
18
Early works to 1800
15
Statistics, Vital
13
Census, 1990
12
Handbooks, manuals, etc
11
Data sets
10
Television news programs
10
Video recordings
10
Census, 2000
9
Census
8
Documentary films
8
Online databases
8
Statistiques
8
Tables
8
Documentary television programs
7
Gazetteers
7
Geospatial data
7
Bases de données
6
Census, 1980
6
DVD-Video discs
6
Dataset
6
Electronic reference sources
6
Geodatabases
6
Geographic information systems data
6
Nonfiction television programs
6
Sources
6
Census, 1970
5
Census, 1996
5
Documentary
5
Registers
5
Statistics, Medical
5
Census, 1940
4
Census, 2010
4
Short films
4
Video recordings for the hearing impaired
4
Biography
3
Census, 2001
3
Census, 22nd, 2000
3
Charts, diagrams, etc
3
Feature films
3
more ...