Apprentice plumbers A manual for beginning. prof. Education - 4 th ed., sr. - (Initial vocational education-metal "," the federal set of textbooks) (neck) / Proizvodstvennoe obuchenie slesarey Uchebnoe posobie dlya nach. prof. obrazovaniya - 4-e izd.,ster. - ("Nachalnoe professionalnoe obrazovanie-Metalloobrabotka", "Federalnyy komplekt uchebnikov") (GRIF)