TY - BOOK AU - MANICKAM, T S AU - VIJAYACHANDRAN, P K TI - Proceedings of the national seminar on sulphur in agriculture, October 18 and 19, 1985 U1 - 631.811.7(540) PY - 1987/// CY - Udyogamandal PB - FACT KW - Sulphur nutrient ER -