International symposium on pollination : <6. : ; 1990
Titolo
Sixth international symposium188 on pollination : Tilburg, the Netherlands, 27-31 August 1990 ; editors and conveners C. van Heemert, A. de Ruijter ; Research centre for insect pollination and beekeeping
Pubbl/distr/stampa
Wageningen (NL) : International society for horticultural science, [1991]