Introduction to the spectrography of speech.

由 Pulgram, Ernst
出版 1959

2Å/mm he 4Å/mm guang zha she pu yi tu pu Atlas for 2Å/mm, 4Å/mm grating spectrograph /

由 Qiu, Deren
出版 1984

Metallurgical spectrum analysis : with visual atlas (separate portfolio) /

由 Crook, Welton J. (Welton Joseph), b. 1886
出版 1935