Aiilawat, A. S. and Dagar, J. C. (1980) “Effect Of N, P and K Fertilizers on Growth Performance and Phosotynthetic Pigments of <I>Bidens biternata</I> (Lour.) Merr. & Sherff”., Indian Forester, 106(10), pp. 752–757. doi: 10.36808/if/1980/v106i10/11261.