TY  - BOOK
AU  - Lopker, John 
TI  - Pictures of personality : : guide to the four human natures 
SN  - 0970581009
U1  - 155.264  
PY  - 2000///
CY  - Los Angeles
PB  - Typology
KW  - Typology (Psychology)
KW  - Psychology
N1  - Includes bibliographical references
ER  -