Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SAKIYAMA R.,"Effects of nitrogen, phosphorus and potassium on the acidity of tomato fruits",Journal of the Japanese Society for Horticultural Science,00137626,THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE,1967,36,4,399-405,https://cir.nii.ac.jp/crid/1390282681277970304,https://doi.org/10.2503/jjshs.36.399