Prof. Dr. MUSTAFA ERKAN answers your questions. From this section, you can send any questions, opinions, suggestions about Never forget that the best thing to do for questions, problems or suggestions that you are curious about and want to find answers to is to consult an expert on this subject.
VEYSI E.(30.07.2020 20:57:31) Bazen başim çok aşiri doniyor.helikoter pervanesi gibi. Acaba neden.birecik lisesinde ayni sinif arkadaşim.selam.
