TY  - BOOK
AU  - Lehman,John A.
TI  - Systems design in the fourth generation: object-based development using dBASE 
SN  - 0471527521
U1  - 005.7565 22
PY  - 1991///
CY  - New York
PB  - Wiley
KW  - System design
KW  - Agricultural Engineering
N1  - Includes bibliographical references and index
ER  -