00433nam a2200133Ia 4500008004100000040001700041082002400058100001600082110005200098245005800150260003300208300001400241650004400255190328s9999||||xx |||||||||||||| ||und||  aNITILcNITIL  221sta341.758bI39C  aChopra, M L  aIndia. Ministry of Education and Social Welfare 0aCopry right and international conventionscM L Chopra  aNew DelhibGovt. Pressc1978  aiii, 37p.  aCopy right Patent laws and legislations