%0 Journal Article
%@ 1588-385X
%A  Debreczeni Katalin
%A  Berecz Katalin
%D 2002
%F acta:22556
%J Acta biologica Szegediensis
%K Természettudomány, Biológia
%N 3-4
%P 195-196
%T Cumulative yield surplus of grain crops as an effect of NPK-fertilisation studied in long-term field experiments
%U http://acta.bibl.u-szeged.hu/22556/
%V 46
%Z Bibliogr.: 196. p.