TY  - BOOK
AU  - Degrood David H
TI  - Haeckel's theory of the unity of nature :  a monograph in the history on of philosophy
U1  - R3xM34, K5 
PY  - 1965///
CY  - Boston
PB  - Christopher Pub House     
N1  - Bib 97-98p
ER  -