Abstract

References
1.
Griffin
DR.
Listening in the Dark: the Acoustic Orientation of Bats and Men. New Haven : Yale University Press , 1958 .
2.
Whitehead
PJP.
The citrus cure for scurvy. Soc Biol Hum Affairs 1987 ; 52 : 1 –18 , 59–81.
3.
Pledge
HT.
Science since 1500: a Short History of Mathematics, Physics, Chemistry, Biology. London : HMSO , 1940 : 245 .
