Y Miscellaneous Categories ( 1 Dok. )

• Y1 Data: Tables and Charts

• Y2 Introductory Material

• Y3 Book Reviews (unclassified)

• Y4 Dissertations (unclassified)    ( 1 Dok. )

• Y5 Further Reading (unclassified)

• Y6 Excerpt

• Y8 Related Disciplines

• Y9 Other