TY  - GEN
AU  - Heckhausen, Heinz
TI  - Motivation and action
SN  - 0540529845
U1  - 153.8 
PY  - 1991///
CY  - Berlin
PB  - Springer-Verlag
KW  - Motivation(psychology)
N1  - HB; Includes bibliography and index
ER  -