https://help.claris.com/archive/help/15/fmp/en/FMP_Help/dbase-iii-iv-dbf-format.html
dBASE III and IV DBF format
dbase iiiand ivdbfformat
https://dl.x86.world/artifacts/WhatMicro_dBASE-iii-Plus_1987/M502.T.html
M502.T — WhatMicro_dBASE-iii-Plus_1987 — X86.WORLD
Text content of M502.T from the floppy disk image WhatMicro_dBASE-iii-Plus_1987, preserved in the X86.WORLD vintage software archive.
dbase iii plusworld