المادة
اللينك – الرابط
Public health and preventive medicine
https://drive.google.com/drive/folders/1-00XZ6AMFjRWY0lsh8ICEhveIvQjF2ZC
Controlled drug delivery system
https://drive.google.com/drive/folders/1HYVDID5jeD__AQgsjMEckICmj9F2rZYh?usp=sharing