イワン・パブロフのインスタグラム(ivan_pavlov123) - 4月21日 06時19分

"Ivan Pavlov was a Russian physiologist best known in psychology for his discovery of classical conditioning. During his studies on the digestive systems of dogs, Pavlov noted that the animals salivated naturally upon the presentation of food." https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.verywellmind.com/ivan-pavlov-biography-1849-1936-2795548&ved=2ahUKEwiI3cu39vfoAhVvh-AKHa8VAwgQFjAVegQIFxA_&usg=AOvVaw0f7TcOwbl9QSJzjK0kVpDw

[BIHAKUEN]UVシールド(UVShield)

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