• A qualitative and quantitative measure of Aufwuchs Production 

    king, Darrell L.; Ball, Robert C. (University of Missouri--Columbia, 1966)
    "Aufwuchs production was measured from its accrual on plexiglass substrates submerged in a stream. A method was developed for separating autotrophic and heterotrophic aufwuchs production and for separating this production ...