Genre
Observers' manuals
Handbooks and manuals
529
Handbooks, manuals, etc
186
Amateurs' manuals
124
Electronic books
113
Charts, diagrams, etc
63
Popular works
55
Observations
48
Manuels d'observation
40
Atlases
37
Guides et manuels
20
Observers manuals
13
Periodicals
13
Scientific atlases
13
Handbook
12
Manuels d'amateurs
11
Catalogs
9
Juvenile literature
9
Ouvrages de vulgarisation
9
Pictorial works
9
handbooks
8
manuals (instructional materials)
8
Graphs
6
Maps
6
Radiosonde observations
6
Advertisements
5
Juvenile works
5
Tableaux, graphiques, etc
5
Amateurs manuals
4
Illustrated works
4
Tables
4
Atlas
3
Early works to 1800
3
Electronic book
3
CD-ROMs
2
Encyclopedias
2
Folklore
2
Guidebooks
2
Identification
2
Internet resource
2
Miscellanea
2
Printed ephemera
2
Technical reports
2
Textbooks
2
Academic theses
1
Annotations (Provenance)
1
Association copies (Provenance)
1
Autographs (Provenance)
1
Bibliography
1
Binders' tickets (Binding)
1
more ...