TY  - BOOK
AU  - Krishan Kumar,
TI  - Theory of classification
AV  - Z696.A4 K74
U1  - 025.4 
PY  - 1979///
CY  - New Delhi
PB  - Vikas
KW  - Classification
KW  - Books
N1  - Includes bibliographical references and index
ER  -