Schaede, R. — Die pflanzlichen Symbiosen.

1948 viii, 187 p., 157 figs, contemporary green half cloth with author/title in gilt on spine, and marbled boards. Ex library F. Verdoorn (with his and his instituteâÇÖs library stamps). Frans Verdoorn (1906-1984) was a Dutch botanist specialized in Bryophytes, publisher, and a scientist who coined the term biohistory.