Annotated directory of product and industry journals.

Manylion Llyfryddiaeth
Awdur Corfforaethol:	International Trade Centre UNCTAD/GATT
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Geneva 1970.
Pynciau:	Commercial products > Periodicals > Bibliography. Industry > Periodicals > Bibliography.