R. Beard
发表
R. Beard,
J. Hartley,
1972
.
R. Beard,
1965,
The British journal of educational psychology.
H. Maddox,
R. Beard,
P. Levy,
1964
.
R. Beard,
1964
.
Ruth M. Beard,
R. Beard,
1972
.
R. Beard,
1976
.
R. Beard,
K. Pole,
1971,
British journal of medical education.
R. Beard,
1967,
British journal of medical education.
David Elkind,
John H. Flavell,
Ruth M. Beard,
1969
.
R. Beard,
1960
.
F. G. Healey,
R. Beard,
P. Holloway,
1968
.
R. Beard,
1968
.
R. Beard,
J. Hartley,
1972
.
R. Beard,
E. Doomes,
1976
.