Original sentence: Other criticism included allegations of propaganda and dullness while admitting that the Institute produced "some good works on political sciences and legal systems".The Institute has been criticised by German American historian Richard Blanke as having anti-German bias
Edited sentence: However, it should also be noted that "while many of the historical works published by this institute have revealed its overriding political purpose, it has also sponsored a good deal of high-quality research at a time when Polish scholars had few other outlets.In the seventies and eighties the Institute produced "some good works on political sciences and legal systems", the Institute's journal (Przegląd Zachodni) however was "in this epoch dull, propagandistic and, from a scientific point of view, scarcely valuable".Most of the institutes publications during the communist era that refer to Polish-German questions have an anti-German slant based on political considerations.This is due to the Polish communist regimes belief that perpetuating "the idea of eternal German-Polish enmity was key to its own efforts to justify that regime's existence in Polish eyes"