Modern Technology: Chemical, Electrical, Industrial, and Mechanical Engineering (4 in 1)

Mechanics: Chemical and Mechanical Engineering Explained (2 in 1)

Mechanical Engineering: Handbook for Electrical Technology and Machinery

Electrical Engineering: A Comprehensive Guide to the Basics of Electrics

Engineering: Aviation, Aerospace, Biomedical, Chemical, Civil, Data, Electrical, Environmental, Industrial, Mechanical and Software Engineering (15 in 1)

Industrial Designs: Ideas and Inventive Problem Solving for Industrial Design

Industrial Development: Aeronautical, Aerospace, Civil, and Industrial Engineering (5 in 1)

Medical Engineering: Biomedical, Chemical, and Informatics Engineering (3 in 1)

Irrigation Systems: Fundamentals and Principles for Beginners

Gardening: Greenhouses, Horticulture, and Irrigation Systems

Horticulture: Fundamentals and Principles for Beginners

Environmental Engineering: The Basic Science of Natural Resources and Waste Management

Metal Detecting: Tips, Techniques, and Tools

Software Development: Data Engineering, Information Technology, Software Engineering, and Wordpress (4 in 1)

International Economics: Global Markets, Competition, Trade, and the World Economy

Global Economics: Developmental, International, and Macroeconomics (3 in 1)

Macro Economics: Principles, Applications, and Macro Economic Theory

Developmental Economics: A Critical Analysis of Economic Development and Growth in Modern History

Business Economics: Managerial and Strategic Economic Applications and Analysis

The Economy: Insights into Information and International Economics (2 in 1)