Ko'rinish
Shrift o'lchami
OQJAR KONIDAN OLINADIGAN NEFT ZAHIRALARINI BAHOLASH NATIJALARI
22-31
22
UOʻK 628.1:502/504:620.9:333.91:504.054:621.311
103-109
48
UO‘K 339.466.54
143-150
102
UDC 351/354
136-142
96
UO‘K 62-503.4
82-87
108
