https://youtu.be/wE2oFW7vsbk
THE DESIGN OF A LOW-TECH SOLAR HEATING SYSTEM FOR RESIDENTIAL USE IN CLIMATE ZONE 2 OF SOUTH AFRICA
IAN YZEL 209041170
https://youtu.be/wE2oFW7vsbk
THE DESIGN OF A LOW-TECH SOLAR HEATING SYSTEM FOR RESIDENTIAL USE IN CLIMATE ZONE 2 OF SOUTH AFRICA
IAN YZEL 209041170