Search Results       Your search for [author]De Vera, Emil P. (Emil Pimentel). returned 1 record.           Iron, manganese and zinc amelioration on the yield and quality of Burley tobacco (Nicotiana tabacum cv. Burley 21) grown under field condition. by De Vera, Emil P. (Emil Pimentel).; 1982. Subject: Tobacco -- Fertilizers and manures; Soils -- Iron content; Soils -- Manganese content; Soils -- Zinc content.          Add to Book Cart Relevance: 37.97%