Nursing Environment of One and a Half Year Old Infants
1歳6ヵ月児の保育環境について

Mika Iwawaki, Hideaki Imanishi, Mizuho Nishino
1983 Shoni shikagaku zasshi. The Japanese journal of pedodontics  
doi:10.11411/jspd1963.21.4_656 fatcat:x3op3awkpjeehf2oxdgwrkht2y