1. Unsound seed in conifers: estimation of numbers of lethal alleles and of magnitudes of effects associated with the maternal parent;Bishir J;Silvae Genetica,1987
2. Genetic and maternal influences on Virginia pine seed;Bramlett DL;Silvae Genetica,1983
3. Model relating unsound seed and embryonic lethals in self‐pollinated pines;Bramlett DL;Silvae Genetica,1971
4. Suspensor and Early Embryo of Pinus