However , Pavel Fitin , who was responsible for analyzing the material , described it as very important data .
Moscow complained that around half of the photographed documents received in the summer of 1944 were unreadable and suggested that Ullmann received more training .
Pavel Fitin , who was responsible for analyzing the material , described it as very important data .
Moscow complained that around half of the photographed documents received in the summer of 1944 were unreadable and suggested that Ullmann received more training .