Filter design data for communication eng
โ
C.W. Hargens
๐
Article
๐
1953
๐
Elsevier Science
๐
English
โ 206 KB
Will man change nature and the universe? He seems to be well on his way. Physicists are busy adding new elements to those existing since the dawn of history. Chemists create organic compounds unheard of in nature. Since Wohler successfully performed his synthesis in 1828, man has added a million