Erkol, Ali Yılmaz Pulse radiolysis studies of the vitamin B12 system Ali Yılmaz Erkol - İstanbul ÇNAEM 1982 - 44 y. 28 cm. - ÇNAEM Raporlar 213 . Subjects--Topical Terms: Vitamin B12. Dewey Class. No.: 574.1926 ERK 1982