TY  - BOOK
AU  - Beil,Donald H.
TI  - The Dif file: for users of VisiCalc and other software 
SN  - 0835913058
PY  - 1983///
CY  - Reston, Va.
PB  - Reston Pub. Co.
KW  - File organization (Computer science)
KW  - Data structures (Computer science)
N1  - Bibliography : p. 213-224
ER  -