TY  - GEN
AU  - Ito,Takeo
TI  - Studies on the reproduction of Hydras: X. Rates of asexual reproduction of hydra Magnipapillata and Pelmatohydra robusta under various conditions 
PY  - 1956///
CY  - [S.l. : 
PB  - s.n.], 
ER  -