TY  - BOOK
AU  - Walker,Roger S.
AU  - Luecke,Gerald,couat
AU  - Battle,Charles W.,coaut
TI  - Understanding computer science
AV  - QA76 W35
PY  - 1981///
CY  - Texas, E.U.A.
PB  - Texas Instruments Learning Center (reimp. 1986)
ER  -