1. Oxygen and carbon dioxide content of culture solutions in relation to cation and anion nitrogen absorption by tomato plants;Arrington L. B.;Soil Science, New Brunswick (N. Jersey),1936
2. XXX.—Researches on the germination of some of the gramineæ. Part I
3. Germinazione di embrioni di Graminaceae staccati della carriosside;Dragone‐Testi G.;Ann. Bot., Turin‐Rom,1935
4. Über die Sekretion des Schildchens;Grüß J.;Jb. wiss. Bot., Berlin,1897
5. The rôle of vitamin C in the growth of higher plants;v. Hansen S.;Ann. Acad. Sci. Fennicae, Helsinki, A,1936