O`quv qo`llanma Husanov G`. H. creator Tursunxodjayev M. L aut Bakiyev A. R aut uz Toshkent Voris nashriyot 2006 uzb 176 b. 42859-42888 (30) 9789943304109 070728 20260805124420.0 00000000000035185