Look at this video lecture hard disc for mathematics and biology by M-Learning. These lectures are prepared by experienced and famous lecturers.This external hard drive contains:560 hours of 1106 video parts with 270 GB size.Supplemented with 2268 pages and 105 MB size of e- study material. It covers Mathematics and Biology of XI, XII standard CBSE and competitive exams like IITJEE mains, IITJEE Advance, AIPMT and AIIMS.Validity: 2 years. Compatible OS: Mac License: Single Machine with Mac Operating System.