Classification and Index (Classic Reprint)

A Classification and Subject Index (Classic Reprint)

Classification: Theoretical and Practical (Classic Reprint)

Physiologie: Classification Décimale, Index Général (Classic Reprint)

Adjustable Classification for Libraries: With Index (Classic Reprint)

New System of Classification and Numbering (Classic Reprint)

Classification: Theoretical and Practical (Classic Reprint)