Khan, Muhammad Manzoor Azolla agronomy / Muhammad. Manzoor Khan. - Los Baǫs, Laguna : IBS-UPLB and SEARCA, 1988. - 152 pages : illustrations ; 23 cm Bibliography : p. 139 - 148. Subjects--Topical Terms: AzollaAzolla as feedAzolla as fertilizer LC Class. No.: SB317 / A94K52 1988