海洋生物と生態系を探求するためのビジュアルガイド。FURS BOOK(1921年)。- Title: Whales, Dolphins and Porpoises- Title: Knowledge Encyclopedia Ocean!- Publisher: DK- Subject: Marine Life- Illustrations: Computer-generated illustrations- Content: Discover marine ecosystems, species, and oceanic phenomena.- Field Guide: A Field Guide to the Carnivores of the Worldご覧いただきありがとうございます。洋書 Principles of Economics, Mankiw, 8th Ed.。