Reference manual for machine-readable bibliographic descriptions.
Contributors: Hopkinson, A.; Unisist International Centre for Bibliographic Descriptions.; Unesco.
Edition: 2nd revised ed., Compiled and edited by H. Diericks and A. Hopkinson [for the] Unisist International Centre for Bibliographic Descriptions.
Series: PGI-81/WS -- 22
Publisher: UNESCO
Published: 1981
Place of publication: Paris
Language: eng
Notes: First edition compiled by M.D. Martin. Paris: Unesco, 1974.