Which Japanese manga series written and illustrated by Naoki Urasawa, when turned into an anima, did Mami Koyama  have a voice acting part in?
Mami Koyama: Mami Koyama (小山 茉美 , Koyama Mami , born January 17, 1955 in Nishio, Aichi, Japan) is a Japanese voice actress affiliated with Aoni Production. Mami Koyama:  Some of her notable roles in the 1990s and 2000s anime include Balalaika in "Black Lagoon", Talia Gladys in "Gundam Seed", Eva Heinemann in "Monster", and Yōko Itoigawa in "Hyōka".
i don't know