Bhattacharyya, Ranjan and Das, T. K and Das, S. and Dey, Abir and Patra, A. K. and Agnihotri, R and Ghosh, Avijit and Sharma, A. R. (2019) Four years of conservation agriculture affects topsoil aggregate-associated (15)nitrogen but not the (15)nitrogen use efficiency by wheat in a semi-arid climate. Geoderma , 337. 333-340. ISSN 0016-7061