text: (a) One frame for prim.;]f')" units. (bl one frame for holders. fhe fraMe for each Govenwrate .. was prepared on the basis of p.-etiminary field mission to ~very district. rhe purpose of the missions was to list sub-di!»tricts and villages. and enumer­ rft-e th~ popts1ation of each vi\~age on the ba:~.is of the informa­ tion contained io the regislers of the district authority. Sub-districts and villages wen' then cIa ss if i e:" i!ft:cord i ng to geographic contiguity. and additional data on the natur-e of the soil and prevailing 111eans of it·rigation was recor·ded in each sub-district to make way for defineation of st,-ata of comparable characteristics; and in each stratum so identified• artifical pri•ary 11nits of r-otJghly equivalent pf'oportions were composed on the basis of village registef's. On average. each artifical unit consisted of about 100 households (8Q-1201w comprising a whote village or part of a village* or yet severol smal~ villages. 4fter these units had been composede the sample of pr~mary units was selected from among them. thus completing the first stage. Before the census itserf could begin. the enumeratof' had to prepare a frame covering alt ho1ders and cof'r-esponding to each of the pri•ary units. whef'eupon questi'onnair (T-1) was filled o~t with the assistance of the ~heikh of the sub-district and ( . -3 - the notables of the villages comprising the ooit.. This ques­ tionnaire covered all households and provided information which hefped to evaluate the status of agricu1turaf hofders and cras­ sify them according to the size of their holdings (namely large., medium and small). In addition,. the questionnaire provided information on the nu~ber of members in each household and live­ stock comprised in its holding. From this list of ho1ders., the second-stage sample was selected as a source of data for the census itself. 
analysis: The text appears to be discussing the methodology and preparation for a census, specifically focusing on the selection of primary units and the collection of data on agricultural holders and their holdings. This suggests that the text is related to the field of agriculture, but also touches on demographic and socioeconomic aspects.