TY  - BOOK
AU  - Lyon, Alan J
TI  - World processing exercises
SN  - 0-435-45099-9
AV  - SJMC HF 5548.2 
PY  - 1989///
CY  - London
PB  - Heinemann Educational Books Ltd
KW  - World processing exercises
KW  - word processing- programmed instruction
KW  - London
N1  - Includes bibliographical references and index
ER  -