BioStor
 | Vögel von Schoa und Süd-Äthiopien Oscar Neumann (1905) Journal für Ornithologie 53(1): 184-243 |
 | THE METABOLIC GRADIENTS OF VERTEBRATE EMBRYOS. III. THE CHICK Libbie H Hyman (1927) Biol Bull 52: 1-38 |
 | THE METABOLIC GRADIENTS OF VERTEBRATE EMBRYOS. IV. THE HEART Libbie H Hyman (1927) Biol Bull 52: 39-50 |
 | THE EFFECT OF LACK OF OXYGEN ON SEA URCHIN EGGS Ethel Browne Harvey (1927) Biol Bull 52: 147-160 |
 | THE REACTION OF HYDRA TO INANITION W A Kepner and P N Jester (1927) Biol Bull 52: 173-1841 |
 | CILIATED PITS OF PRORHYNCHUS STAGNALIS Margaret R Haase (1927) Biol Bull 52: 185-196 |
 | A check list of the land and freshwater birds of the western Cape Province J M Winterbottom (1968) Annals of The South African Museum 53: 1-276 |