Halstead, Richard (Richard R.) Protecting intellectual property understanding and using trade marks, patents, designs, and copyright in business Richard R. Halstead - 2nd ed. - Hertfordshire ICSA Publishing 1996 - x, 163 p. : ill. ; 25 cm. Published in association with Proce Waterhouse ISBN: 1872860931 RM131.50 LCCN: 93-173315 Subjects--Topical Terms: Intellectual property--United Kingdom