Children and plastics : stages 1, 2 and background : a unit for teachers / Mary Horn... [et al.]

Children and plastics : stages 1, 2 and background : a unit for teachers / Mary Horn... [et al.] . - Hemel Hempstead : MacDonald Educational, imp. 1989 . - [6], 108 p. : il. 22 cm . - (Science 5-13=5- 13)
0-7501-0050-8 (Brochado)

501:372.85
372.85:501