Grosh, R. C., Singhal, R. M. and Sharma, S. D. (1980) “Electrophoretic Fractionation and Characterization of Humic Acids of the Soils of Doon Valley under Sal (<I>Shorea robusta</I>)”, Indian Forester, 106(3), pp. 205–211. doi: 10.36808/if/1980/v106i3/11152.