小学生の放課後施設の充実策で第一生命経済研が調査 母親の希望は安全管理がトップ--学習サポート機能の充実も望む
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- 2009-03-10
論文 | ランダム
- A Review of Schimitschekia BOUCEK (Hymenoptera : Pteromalidae), with Description of a New Species from Japan
- Studies on the relationship between virulence of polioviruses and their antigenicity.
- Magnetic Properties of Yamato-73-04 and Yamato-73-07 Meteorites
- On Estimating the Parameter Gap of Two Populations Based on Ranked Data
- Studies of High Frequency Combustion Oscillations in a Gaseous Propellant Rocket Motor