CHANGE IN C:N:P. RATIOS DURING PASSAGE OF WATER AREAS FROM RIVERS TO A LAKE.

RELATION LAC-RIVIERE. QUALITE 1987-88 DES EAUX DE QUATRE RIVIERES TRIBUTAIR- ES DE DEUX LACS JAPONAIS : CARBONE (TOTAL, DBO, DCO) ; AZOTE ; PHOSPHORE ; CHARGES POLLUANTES ; PROPORTIONS DES DIVERS COMPOSANTS ; ANALYSES HEBDOMADAIRES.