Studies on the nutrition of rice plant (Oryza sativa L). 3. Partial efficiency of nitrogen absorbed by rice plant at different stages of growth in relation to yield of rice (O. sativa var. indica) Tanaka, A., E.Al. Proc. Indian Acad. Sci. Sect. B 49(4): 207-16 1959 https://eurekamag.com/research/014/209/014209589.php