शैली
Atlases
1
Biography
1
Case studies
3
Congresses
5
Congresses.#
2
Directories
1
Directory
1
Encyclopedias
1
Examination Questions
3
Examinations, questions, etc
4
Handbooks, manuals, etc
6
Juvenile literature
1
Outlines
3
Periodicals
4
Popular Works
1
Popular works
1
Problems and Exercises
1
Problems, exercises, etc
1
Study guides
4
Textbooks
1
handbooks
1
programmed instruction
2