Katoch, P. C., Bhardwaj, S. D. and Kaushal, A. N. (1980) “Effect of Different Levels of N, P and K on Herbage (Leaves) Yield and Digoxin Content of <I>Digitalis lanata</I> Ehrh”., Indian Forester, 106(8), pp. 561–564. doi: 10.36808/if/1980/v106i8/11224.