Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) PERSON R. L.,"Remote mapping of standing crop biomass for estimation of the productivity of the short-grass Prairie, Pawnee National Grasslands, Colorado","Proc. 8 the Int. Symp. on Remote Sens. of Environ., ERIM, Ann Arbor, MI, 1972",,,1972,,,1357-1381,https://cir.nii.ac.jp/crid/1570572701408181248,