Rating scales measures of central tendency and sample sizes

Manylion Llyfryddiaeth
Prif Awdur:	Grigg, A. O.
Awdur Corfforaethol:	Transport and Road Research Laboratory
Fformat:	Llyfr
Iaith:	English
Cyhoeddwyd:	Crowthorne, Berkshire Transport and Road Research Laboratory 1981.
Pynciau:	Public opinion polls.