Photocopies from abroad: Directory of photocopying and microcopying services.

The Hague 1963
3d and rev. ed.

Directory of photocopying and microcopying services.

The Hague 1955
2d and rev. ed.

Universal decimal classification : 10 Jahres-Ergänzung zu den DK-kurzausgaben. = 10-year supplement to abridged UDC editions. = Supplément decennal aux éditions abrégées de la...

La Haye : FID/UNESCO, 1969

Directory of photocopying and microcopying services.

The Hague, [publisher not identified], 1955
Second and revised edition.

Manual on document reproduction and selection.

Hague, [publisher not identified], 1953