@article{ArayaKen:2001-12-30,
author="Araya, Ken",
title="Improvement of Planosol Solum II",
journal="Journal of Environmental Science Laboratory",
ISSN="13464736",
publisher="Hokkaido College, Senshu University",
year="2001",
month="dec",
volume="8",
number="",
pages="231-282",
URL="http://ci.nii.ac.jp/naid/110001000330/en/",
DOI="",
}