Thể loại
Periodicals
110
Textbooks
19
Periodiques
10
P�eriodiques
6
Case studies
4
Abstracts
3
Classification
3
Biography
2
Handbooks, manuals, etc
2
Congresses
1
Digests
1
Examinations, questions, etc
1
Genealogy
1
Lehrbuch
1
Observers' manuals
1
Problems, exercises, etc
1
Pᤲiodiques
1
Russia (Federation)
1
Study guides
1