TY - GEN N1 - This study has been partially supported by grant No. FG-Po-260 from the US Department of Agriculture under PL-480 L1 - http://www.rcin.org.pl/Content/188522/PDF/KOR001_147207.pdf M3 - Text PY - 1977 EP - 235 KW - seed crops in scots pine KW - cone crops in scots pine KW - effect of mineral fertilization A1 - Chałupka, Władysław A1 - Fober, Henryk A2 - Polska Akademia Nauk. Instytut Dendrologii PB - Państwowe Wydawnictwo Naukowe VL - 22 CY - Poznań ; Warszawa SP - [219] T1 - Studies on the effect of mineral fertilisation on flowering and cone and seed crops in Scots pine (Pinus silvestris L.) through an analysis of the litter drop T1 - Studies on the effect of mineral fertilisation on flowering and cone and seed crops in Scots pine (Pinus silvestris L.) through an analysis of the litter drop UR - http://www.rcin.org.pl/dlibra/publication/edition/188522 ER -