TY - BOOK AU - Mukherjee, Santosh Kumar TI - Relative efficiency of soil and spray application of urea in potato : a thesis submitted to the faculty of the Post-Graduate School, Indian Agricultural Research Institute, New Delhi, in partial fulfilment of the requirements for the degree of Master of Science in Agronomy New Delhi 1961 PY - 1961/// CY - New Delhi PB - Indian Agricultural Research Institute ER -