00471nam a2200097Ia 4500008004100000082003700041100004300078245017700121260006700298300000800365140113s9999    xx            000 0 und d  a591.526'1970.9.7/18'(082.2)   L1  a"Boer den, P.J. & Gradwell, G.R., Ed."  a" Advanced study institute on dynamics of numbers in populations, Oosterback, Sep. 7-18, 1970.Dynamics of populations : Proceedings Edited by P.J.den Doer and G.R.Gradwell"  a1971bCentre for Agric.Publishing & DocumentationcNetherlands  a611