参考文献

Vanderbilt; Hass Industrial and Engineering Chemistry, 1940 , vol. 32, p. 35 Full Text Show Details Purdue Research Found. Patent: US2139120 , 1937 ; Full Text Show Details Purdue Research Found. Patent: US2132330 , 1937 ; Full Text Show Details Purdue Research Found. Patent: US2135444 , 1937 ;