CBSE Class 9
Free courses
Science
Organization in Living World
Lesson 3 of 5 • 5 upvotes • 15:00mins
Means of spread Air borne Water borne Sexually Transmitted Diseases Vectors for diseases
5 lessons • 1h 9m
Introduction and Terms (in Hindi)
15:00mins
Peptic Ulcers and Infectious Diseases (in Hindi)
Means of Spread of Diseases (in Hindi)
Principles of Treatment and Prevention (in Hindi)
Final Summary and Some Questions (in Hindi)
9:37mins