TY  - RPRT
TI  - [A training method for physiological perception studies and their application in orientation experiments with birds].
AU  - H G Walraff
AU  - N Kleber
PY  - 1967
DO  - 10.1007/bf02135706
UR  - https://pubmed.ncbi.nlm.nih.gov/6055949/
ID  - 6055949
ER  -