Objectives: The present research investigated the effect of assertive skills training on attitude towards substance abuse in Tehran and Allame Tabatabayee university students. Methods: The sample of this research includes 76 university students (39 experimental. 37 control) From two university by using random selection sampling method. They pre tested and then choose Experimental grou... https://lockdownsecuritycanada.shop/product-category/parking-sensor-kit/