Look at this video lecture hard disc for physics and biology by M-Learning. These lectures are prepared by experienced and famous lecturers. This external hard drive contains: 666 hours of 1268 video parts with 330 GB size. Supplemented with 2454 pages and 124 MB size of e- study material. It covers Physics and Biology of XI, XII standard CBSE and competitive exams like AIPMT and AIIMS. Validity: 2 years. Compatible OS: Windows XP/7/8 , License: Single Machine with Windows Operating System.