Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) UJIHIRA Masuyuki and IIZUKA Takehiko and KAWAMURA Youhei and KAWAKITA Minoru,Study on the Utilization of Magnification Equation of Lens for the Scale Measurement of an Object in a Long Distance.,Journal of the Japan Society of Engineering Geology,02867737,Japan Society of Engineering Geology,2002,43,1,2-13,https://cir.nii.ac.jp/crid/1390001204096362752,https://doi.org/10.5110/jjseg.43.2