TY  - BOOK
AU  - Halvorson,H.Orin
ED  - 
TI  - Spores: a symposium held at Allerton Park, Illinois October 11-12, 1956 under the auspices of the University of Illinois and with the support of the Office od Naval research 
PY  - 1957///
CY  - Washington : 
PB  - American Institute of Biological Sciences, 
ER  -