California condor trapping over the Grand Canyon

✍ Skurzynski, Gloria; Ferguson, Alane 📂 Fiction 📅 2002 🏛 National Geographic Society 🌐 English ⚖ 507 KB

When Dr. Olivia Landon receives this anonymous e-mail shortly after broadcasting her controversial plan to save the condors, everyone thinks it's a crank threat except Dr. Landon's daughter Ashley. She's sure it's the handiwork of Morgan Rogers, self-proclaimed anarchist and computer geek. Su

Over the Edge: Death in the Grand Canyon

✍ Steven Stephanides 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 53 KB

Over the edge: a mystery in Grand Canyon National Park

✍ Gloria Skurzynski 📂 Fiction 📅 2002;2017 🏛 National Geographic Society;National Geographic Ki 🌐 English ⚖ 147 KB 👁 3 views

When Dr. Olivia Landon receives this anonymous e-mail shortly after broadcasting her controversial plan to save the condors, everyone thinks it's a crank threat except Dr. Landon's daughter Ashley. She's sure it's the handiwork of Morgan Rogers, self-proclaimed anarchist and computer geek. Su

Comparative Immunology || Conflict in th

Comparative Immunology || Conflict in the Grand Canyon

✍ Chris Elfring 📂 Article 📅 1990 🏛 University of California Press 🌐 English ⚖ 733 KB

Notes on a Few Birds of the Grand Canyon

Notes on a Few Birds of the Grand Canyon, Arizona

✍ Melicent Humason Lee 📂 Article 📅 1920 🏛 University of California Press 🌐 English ⚖ 128 KB

Human Impact on the Inner Gorge of Grand

Human Impact on the Inner Gorge of Grand Canyon National Park

✍ George N. Huppert and Gail Ludwig 📂 Article 📅 1978 🏛 University of California Press 🌐 English ⚖ 668 KB