Санитарная техникаTibar, Harri; Paal, Leopold; Mölder, Heino; Ütt, Jaanus; Lode, Elve; Kurbatov, V.A.; Toomet, Madis; Kask, Endel; Koppel, Tiit; Dumkina, Galina; Ruubel, R.1987 https://www.ester.ee/record=b1294161*est