Iranian Association for Management of Technology Journal of Science and Technology Policy 20080840 3 1 2009 07 23 Policy layers of science and technology Policy layers of science and technology 1 1 12792 FA Journal Article 1970 01 01 Policy layers of science and technology Policy layers of science and technology https://jstp.nrisp.ac.ir/article_12792_2ec5cb84a6e4c061bd5dc74f43f7000f.pdf