Guide to the use of UDC : an introductory guide to the use and application of the Universal Decimal Classification / by I.C. McIlwaine ; with participation from A. BuxtonGuide to the use of UDC : an introductory guide to the use and application of the Universal Decimal Classification / by I.C. McIlwaine ; with participation from A. BuxtonThe universal decimal classification : a guide to its use / I.C. McIlwaineThe universal decimal classification : a guide to its use / I.C. McIlwaine