Synthēkai diatrophēs tōn astikōn noikokyriōn : ereuna diexachtheisa eis tas astikas periochas tēs Hellados kata to 1957/58 = Nutritional level of urban households : a survey carried out in the urban areas of Greece during 1957/58 (Ethnikē Statistikē Hypēresia tēs Hellados, 1964)