Abstract

References
1.
Brandt L.
: Letter to the Editor. Can. Psychiatr. Assoc. J. 18 . 4 : 350 , 1973 .
2.
Popper Karl R.
: The sources of knowledge and of ignorance. Encounter , 19 , 42 -57 , 1962 .
3.
Watzlawick P.
,
Beavin J. H.
,
Jackson D. D.
: Pragmatics of Human Communications , New York. W. W. Norton & Co. , p. 192 . 1967 .
