TY  - GEN
AU  - Wilson,Louis R.
TI  - The practice of bool selection: papers presented before the Library Institute at the University of Chicago July 31 to august 13, 1939 
U1  - 025.21 21
PY  - 1940///
CY  - Chicago, Illinois
PB  - The University of Chicago Press
KW  - LIBROS
KW  - SELECCION
ER  -