SHEELA,K.L. CYTOLOGICAL EFFECTS OF THE FERTILIZER AMMONIUM SULPHATE ON ROOT TIP CELLS OF ALLIUM CEPA .L. English - - KERALA UNIVERSITY OF KERALA 1983 - 24 HB ISBN: Source: Subjects--Uniform Titles: Subjects--Topical Terms: CYTOLOGY Dewey Class. No.: 571.6 SHE