1. Specification for mosquito coils;Malaysian Institute of Standards;Pyrethrum Post,1971
2. Mosquito coils. I. General description of coils, their formulation and manufacture;Maciver;Pyrethrum Post,1963
3. Chemical Analysis of Ecological Materials;Allen,1974
4. Industrial Pollution;Sax,1974
5. Fossil fuel combustion and the major sedimentary cycle;Bertine;Science,1971