Nature

Geographic Variation in the North American Cyprinid Fish, Hybopsis gracilis

El Morro Trails: El Morro National Monument, New Mexico

The Lure of the Mississippi

Carlsbad Caverns National Park, New Mexico

Curious Facts in the History of Insects; Including Spiders and Scorpions

A Text-book of Entomology

The Botanical Lore of the California Indians with Side Lights on Historical Incidents in California

Cambrian Ocean World

Making Bird-Friendly Birdhouses

Of Man and Beast

Know Your Chickens

Know Your Cows

Agro-Forestrium Hyperaccumulator Plant To Clean Toxic Plastic Waste & Micro Plastic Waste From Nature

Integrated Environmental Footprint Index (IPAI)

The Climate Change Hoax: The Global Warming Deception

The Secret Life of Salmon

Sex in the Sea

All Things Reconsidered

Bernissart Dinosaurs and Early Cretaceous Terrestrial Ecosystems

African Dinosaurs Unearthed