00715nam0 22002293i 450 PUV028887620231121125612.020160126d1944 ||||0itac50 baengusz01i xxxe z01nModern operational mathematics in engineeringby Ruel V. ChurchillNew YorkLondonMcGraw-Hill book company1944X, 306 p.24 cmChurchill, Ruel V.MILV042273070447Churchill, Ruel VanceIEIV106687Churchill, Ruel V.ITIT-0120160126PUV0288876 54Modern operational mathematics in engineering3613492UNICAS