The Importance of the patent system to developing countries :  Collection of lectures given at the world symposium organized by the … at Colombo, Sri Lanka in February 1977 

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<br/><br/><label>Subjects--Topical Terms: </label><br/>Patentschutz<br/>Patentwesen<br/>Entwicklungsländer<br/>Kongress<br/>Colombo 1977