The first two editions represent a mixed collection of some of Mehmet Yayla's works.
The 3rd edition mainly deals with the topic "Koran and Evolution". The view of the Koran on the evolution of animals and the history of human development.
The 4th edition of the Codex Mehmetians entitled: "On Responsibility" deals with the topics: Responsibility towards society and Responsibility towards nature.
The 5th edition of Codex Mehmetians, entitled: "On Finances, Income and Risks", deals with the topics: passive and active income, passive and active sideline, stock methods and strategies, risks and bank loans, as well as workforce and sideline self-employment. The 5th edition is a self-contained book. Published 12/31/2022.
The 6th edition of Codex Mehmetians is a self-contained book of over 290 pages (text only). Published on 16.01.2023
The book titled: "Technology Development: Modern Technologies and Technologies of the Furture" addresses the latest developments as well as future prospects in the areas: Technologies in automobiles (including electric cars), new motor vehicles (including e-scooters, hyperloop, air cabs), aerospace (including drones), new water vehicles, power generation and storage, consumer electronics, medical technologies, environmental technologies, construction technologies, transportation technologies, agricultural technologies, modern wars and military technologies, technologies in industry and security, advances in robotics and machinery.
So far, the two books "About Finances, Income and Risks" and "Technology Development: Modern Technologies and Technologies of the Future" are only available in German. The books will be translated into English in the near future.
Cover sheet and table of contents (German edition)