Genre
Handbooks, manuals, etc
6
Juvenile fiction
5
Case studies
4
Educational films
4
Instructional films
4
Problems, exercises, etc
3
Audio-visual aids
2
Juvenile literature
2
Actes de congrès
1
Bibliography
1
Biography
1
Conference papers and proceedings
1
Congresses
1
Instructional and educational works
1
Periodicals
1