TY  - GEN
AU  - Barker,K N
TI  - Data collection techniques: observation
SN  - 0002-9289
PY  - 1980///1124
KW  - Behavior
KW  - Data Collection
KW  - methods
KW  - Humans
KW  - Records
KW  - Research Design
KW  - Research Personnel
N1  - Publication Type: Journal Article
ER  -