Excel workbook protection
Read Next →
Geographer and traveller with a wide interests in astronomy. My area of work covers GIS and amateur photography also. My goal is to bring a new solutions, that can be implemented into current world. An original point of view arises out of the things, which most of people is not aware of. I also take a look on the matters from the different angle.
My area of study for now are rare atmospheric and celestial events happening on the sky.