1. Baenzinger, H., andJ. E. R. Greenshields: The effect of interspecific hybridization on certain genetic ratios in sweet clover. Can. J. Botany36, 411–420 (1958).
2. Brink, R. A.: A non-bitter variety ofMelilotus. Science79, 301 (1934).
3. Clarke, A. E.: Inheritance of the dwarf branching habit in sweet clover. Sci. Agr.11, 326–332 (1931).
4. Dworak, L.: The selection of elite forms ofMelilotus albus with low coumarin content. Herbage Abstr.7, 217 (1937).
5. Goplen, B. P.: Sweet clover investigations at Saskatoon, Canada. Report of the ninth sweet clover improvement conference, Madison, Wisc. USA (1961).