Trefor Williams

Attitudes of undergraduate students to the uses of animals

Martin Stanisstreet, Trefor Williams, Nina Spofforth, 1993 .

Attitudes of children to the uses of animals

M. Stanisstreet, Nina Spofforth, Trefor Williams, 1993 .

Children's ideas about rainforests

M. Stanisstreet, E. Boyes, E. Greaves, 1993 .

School health education 15 years on

Trefor Williams, 1986 .