SCIMA valintakori viitteet

lkm: 2
1.
Documentacion Social
1990 : OCT-DEC, 81, p. 53-64
1990
2.
Resources, Conservation and Recycling
1995 : APR, VOL. 13:1, p. 37-56
1995 Lee, J. J.
O'Callaghan, P.
Allen, D.
SCIMA