Geography of Asia though the Middle East is a division of Asia. The demarcation between Asia and Africa is the isthmus of Suez and the Red Sea. The border with Europe starts with the coast of the eastern Mediterranean, even though Turkey in the Near East extends partly into the Aegean Islands and includes Istanbul on the European side of the Bosphorus. On the north the boundary between the continents of Asia and Europe is commonly regarded as running through the Dardanelles, the Sea of Marmara, the Bosporus, the Black Sea, the Caucasus Mountains, the Caspian Sea, the Ural River to its source,
Gulls of Europe, Asia and North America Gulls of Europe, Asia and North America Gulls of Europe, Asia and North America by Klaus Malling Olsen and Hans Larsson is a volume in the "Helm Identification Guides" series of bird identification books. The book is intended to succeed Peter J. Grant's "" as the standard identification work on Northern Hemisphere gulls. Although the Helm series already contained a volume on seabirds, by Peter Harrison, gulls compete for space in that volume with several other seabird families; in addition, Harrison's book was published in 1983, a time when knowledge of gull identification (and taxonomy) was in a considerably more