 ... result of chemical work on insecticides conducted this year, ..a method for the rapid field determination of sulphur on foliage and fruit treated with sulphur preparations was devised, the composition -of colloidal calcium arsenate was determined...  Report of the Chief for 1862-1927 - Side 11av United States. Bureau of Chemistry - 1925Uten tilgangsbegrensning - Om denne boken
 | United States. Department of Agriculture - 1924 - 802 sider
...-of colloidal calcium arsenate was determined and the best method of preparing it was worked out, and the general investigation of the ^chemistry of calcium...has been under way for several years, was concluded. The chemical and physical properties of 12 crystalline arsenates of calcium, several of which are new,... | |
 | 1928 - 1270 sider
...of colloidal calcium arsenate was determined and the best method of preparing it was worked out, and the general investigation of the chemistry of calcium...has been under way for several years, was concluded. The chemical and physical properties of 12 crystalline arsenates of calcium, several of which are new,... | |
 | United States. Department of Agriculture - 1926 - 810 sider
...of colloidal calcium arsenate was determined and the best method of preparing it was worked out, and the general investigation of the -chemistry of calcium...has been under way for several years, was concluded. The chemical and physical properties of 12 crystalline arsenates of calcium, several of which are new,... | |
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