Greetings, B.Sc. with credits is for plain B.Sc. and specialized B.Sc. such as B.Sc. in IT, B.Sc. in Biology, B.Sc. in Computer science etc. Regular means that it is for the regular batch. REV16 means the course you want was revised in the year 2016 and that is the latest time when the curriculum was changed. Hope this helps. All the best!