Search Results       Your search for [author]Llapitan, Mario B. returned 1 record.           A study on the effects of different levels of nitrogen, phosphorus and potash on the yield of improved harbot variety of tomato. by Llapitan, Mario B.; 1974. Subject: Tomatoes -- Fertilizers and manures; Nitrogen fertilizers; Phosphatic fertilizers; Potassium fertilizers.          Add to Book Cart Relevance: 17.79%