Here is the Jntu Open Source Software 8 Units Material . The material is prepared such that it is useful all the three jntu regions. Here you can find all the 8 units materials with detailed explanation.
Download from the below two sets
Open Source Software 8 Units Material set-I Download here
Open Source Software 8 Units Material set-II Download Here
Open Source Software 8 Units Material set-I Download here
Open Source Software 8 Units Material set-II Download Here