Production of Diesel Fuel from Used Engine Oil: 2nd Edition: The Alternative to Biodiesel, Red Diesel, Diesel Non-road, Marine Diesel, Kerosene & Liquefied Natural Gas for Diesel Engines Alan Delfin E-Book (epub) 21.09.2019

How to Fix, Maintain & Troubleshoot Your Car Like a Professional: A Car Book for All Levels: Auto Mechanics Fundamentals Alexandre Tesla, Alan Adrian Delfin-Cota E-Book (epub) 15.10.2022

Go Solar and save Dollars: Introductory Guide to the World of Solar Energy and Its Practical Applications Alan Delfin, Siemens Michael E-Book (epub) 18.07.2019