TY  - BOOK
T1  - Graphical methods in research /
DA  - 1975, c1965.
CY  - Huntington, N.Y. :
AU  - Levens, A. S.
CN  - TA337
CN  - TA337
PB  - R. E. Krieger,
PP  - Huntington, N.Y. :
PY  - 1975, c1965.
N1  - Reprint of the ed. published by Wiley, New York.
ID  - 17519
KW  - Graphic methods.
SN  - 0882753169
TI  - Graphical methods in research /
ER  -