How
to conduct consumer and opinion research.
The sampling survey in operation. Ed. by Al-
bert B. Bla nkenshtip.
8:o New York & London 19^6.
(The American series of public relations
books...)

How
to conduct consumer and opinion research.
The sampling survey In operation. Ed. by Al-
bert B. Blankenship •
8:0 New York & London 1946.
(The American series of public relations
books...)