TY  - BOOK
AU  - Kahn,Gilbert
AU  - Yerian,C.Theo
TI  - Progressive filing
AV  - HF5736 .K28 1955
U1  - 651.53 
PY  - 1955///
CY  - New York
PB  - Gregg Pub. Division, McGraw-Hill
KW  - Indexing
KW  - Filing systems
N1  - First published by the Library Bureau in 1925 under title: Progressive indexing and filing for schools
ER  -