Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsunaka Teruo and Nakatsuji Toshiro and Ootuka Syougo and Kiso Seiji,Evaluation of Land Improvement and Heavy Rate Incorporation of Farmyard Manure into Heavy Clay Soil at Grassland Renovation on Grass Production,Japanese Journal of Grassland Science,0447-5933,Japanese Society of Grassland Science,2017,62,4,189-198,https://cir.nii.ac.jp/crid/1390282680728543488,https://doi.org/10.14941/grass.62.189