Document Type : Original Article
Authors
1 Head of the secretarial department of Hamshahri newspaper ads organization
2 A member of a scientific body and a stadium, and one of the sciences and social connections, one of the sciences and investigations, Daneshvah Azad Islami, Tehran, Iran.
3 A member of a scientific body and a daneshyar yarproh sciences of social connections, one of the sciences and investigations, one of the sciences and investigations, Danshah Azad Islami, Tehran, Iran.
Abstract
Keywords