SAIGHI, S., 		DOUMANDJI, S., ET 		BELHAMRA, M..
" NUMERICAL EVALUATION OF POPULATIONS OF THE WHITE SCALE PARLATORIA BLANCHARDI TARG. 1868 (HEMIPTERA, DIASPIDIDAE) AS A FUNCTION OF THE POSITION OF THE ADULT FEMALES ON LEAFLETS OF DATE PALM (PHOENIX DACTYLIFERA L) IN THE PALM GROVES OF ZIBAN (BISKRA, ALGER" <em>Courrier du Savoir</em> [En ligne], Volume 19(17 mars 2015)