Causal and evolutionary aspects of the determination of birds numbers with special reference to hole-nesting birds : workshop, 7-11 October 1985, Wageningen, The Netherlands
"Causal and evolutionary aspects of the determination of birds numbers with special reference to hole-nesting birds : workshop, 7-11 October 1985, Wageningen, The Netherlands"
"Causal and evolutionary aspects of the determination of birds numbers with special reference to hole-nesting birds : workshop, 7-11 October 1985, Wageningen, The Netherlands"