Genre
Early works to 1800
262
Textbooks
97
Periodicals
60
Observations
17
Popular works
13
Juvenile literature
12
Tables
11
Biography
8
Congresses
7
Observers' manuals
6
Bibliography
5
Atlases
3
Problems, exercises, etc
3
Terminology
3
Commentaries
2
Dictionaries
2
Ephemerides
2
Pre-Linnean works
2
Programmed instruction
2
Périodiques
2
Abstracts
1
Catalogs
1
Charts, diagrams, etc
1
Classification
1
Electronic books
1
Juvenile Literature
1
Juvenile fiction
1
Miscellanea
1
Nomenclature
1
Pictorial works
1
Records and correspondence
1
Sources
1
Specimens
1