Complex sentence: Razgon was promoting the idea of "museum sources studies", i.e. museum objects analyzed as a source of information, he was also interested in determining the place of museology in relation to other sciences and fields of knowledge and in the improvement of museological terminology.
Split into simpler sentences: Razgon was promoting the idea of "museum sources studies", i.e. museum objects analyzed as a source of information. He was also interested in determining the place of museology in relation to other sciences and fields of knowledge and in the improvement of museological terminology.