omar, a. (1970). on the maintance of a system of machines by one repairman. the institute of national planning.
Chicago-čujuhus (17. p.)omar, ahmed. On the Maintance of a System of Machines by One Repairman. cairo: the institute of national planning, 1970.
MLA-čujuhus (9. p.)omar, ahmed. On the Maintance of a System of Machines by One Repairman. the institute of national planning, 1970.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.