string(3) "DDD" NULL string(3) "AAA" string(3) "CCC" string(4) "user" NULL NULL string(3) "CCC" string(4) "user" NULL E 1 حل المسائل اینکروپرا انتقال حرارت Fundamentals-of-Heat-and-Mass-Transfer-7th-Edition-incropera-Solutions-Manual

E 1 حل المسائل اینکروپرا انتقال حرارت Fundamentals-of-Heat-and-Mass-Transfer-7th-Edition-incropera-Solutions-Manual

string(3) "BBB" string(8) "messages"