Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) UENO JUN,THE ANALYSIS FOR THE INFORMAL STYLE LEARNING ACTIVITIES AT THE OPEN-SPACE OF ELEMENTARY SCHOOL : Studies on the use of open-space in elementary school (part. 2),"Journal of Architecture, Planning and Environmental Engineering (Transactions of AIJ)",09108017,Architectural Institute of Japan,1989,406,0,73-85,https://cir.nii.ac.jp/crid/1390282679754786688,https://doi.org/10.3130/aijax.406.0_73