631.8
Y35M
           Yawalkar, K S
               Manures and fertilisers \ K S Yawalkar - 4th rev. - Nagpur : Agri-Horticultural Publishing House, 1977.
               xvi, 379p.
103412
                Subjects: Fertilizers-India; Fertilizers-Application; Plants-Nutrition; Manures-India; Organic wastes-India; Plant nutrient.