Water and Wastewater Conveyance: Pumping, Hydraulics, Piping, and Valves

The Problem of Increasing Human Energy: With Special Reference to the Harnessing of the Sun's Energy

Spellman's Standard Handbook for Wastewater Operators: Volume III, Advanced Level, Second Edition, Edition 2

The True Wireless

Microbiology for Water and Wastewater Operators (Revised Reprint)

Energy and Civilization: A History

UNIVERSE

The Science of Air: Concepts and Applications, Second Edition, Edition 2

Crystal Healing: The Ultimate Guide on the Power of Crystals (Harness the Power of Crystals and Sacred Geometry for Manifesting Abundance)

Surviving an OSHA Audit: A Management Guide, Edition 2

Crystal Healing: Heal Yourself With Crystals and Healing Stones (Strategies to Transform Your Health With the Power of Stone Magic)

Handbook of Water and Wastewater Treatment Plant Operations: Edition 3

Crystal Healing: A Beginners Guide on Using Earth Energies for Healing (How to Use Stress and Anxiety Management, and Development of Your Intuition)

Geology for Nongeologists

Energy for Future Presidents: The Science Behind the Headlines

Environmental Science and Technology: Concepts and Applications, Edition 3

The Science of Electric Vehicles: Concepts and Applications

Microalgae Cultivation for Biofuels Production

Fundamentals of Wastewater-Based Epidemiology: Biomonitoring of Bacteria, Protozoa, COVID-19, and Other Viruses

Renewable Energy Engineering