Per Christiansen

11 books • 6 series

Dr Per Christiansen, Ph. D, is Associate Research Professor of Zoology at the University of Copenhagen. He has contributed to several books, including a comprehensive collection of the world's bird species
Mar 5, 2019
Cover of Encyclopedia of Birds

Encyclopedia of Birds

Jun 14, 2018
Cover of Birds

Birds

Jul 16, 2008
Cover of Pests & Parasites

Pests & Parasites (Nature's Monsters: Insects & Spiders)

Jul 16, 2008
Cover of Prehistoric Beasts

Prehistoric Beasts (Nature's Monsters: Dinosaurs)

Jul 16, 2008
Cover of Terrifying & Ugly Sea Creatures

Terrifying & Ugly Sea Creatures (Nature's Monsters: Water Creatures)

Jul 16, 2008
Cover of Armored & Spiked Dinosaurs

Armored & Spiked Dinosaurs (Nature's Monsters: Dinosaurs)

Jul 16, 2008
Cover of Poisonous Spiders

Poisonous Spiders (Nature's Monsters: Insects & Spiders)

Jul 16, 2008
Cover of Constrictor Snakes

Constrictor Snakes (Nature's Monsters: Reptiles & Amphibians)

Jul 1, 2008
Cover of Nature's Monsters Fall 2008 Release Set (6 Titles)

Nature's Monsters Fall 2008 Release Set (6 Titles) (Nature's Monsters Fall 2008 Release Set (6 Titles))

Aug 8, 2006
Cover of Sticker Fun Facts: Dinosaurs

Sticker Fun Facts: Dinosaurs (Sticker Fun Facts)

May 1991
Cover of Exchange Rate System in Some European Countries

Exchange Rate System in Some European Countries