Lead, cadmium, mercury, copper and zinc content in Polish powdered milk products for infants and children - Wojciechowska-Mazurek, Maria; Karlowski, Kazimierz; Kumpulainen, Jorma; Starska, Krystyna; Brulinska-Ostrowska, Elzbieta; Zwiek-Ludwicka, Kazimiera (The Royal Society of Chemistry, 1996)