TY  - BOOK
AU  - Steenstrup, Johannes Japetus Smith.
AU  - Busk,George
TI  - On the alternation of generations, or The propagation and development of animals through alternate generations : : A peculiar form of fostering the young in the lower classes of animals 
PY  - 1845///
CY  - London
PB  - Ray Society, 
ER  -