Reference manual for machine readable bibliographic descriptions /
compiled and edited by H. Dierickx and A. Hopkinson [for the] Unisist International Centre for Bibliographic Descriptions (UNIBID)
- 2nd ed. rev.
- Paris : Unesco, 1981
- v, [341] p.
PGI /81 /WS /22
Machine-readable bibliographic data -- Handbooks, manuals, etc.