CHANGES OF PTTH AND ECDYSTEROID TITERS IN LAST INSTAR LARVAE OF THE ASIAN CORN BORER OSTRINIA FURNACALIS(GUENEE)
GUO SU-TANG, LIU RUI-LIN, JIANG RONG-JING, CAO MEI-XUN
. 1992, (1): 15 -21 .