1 |  | Carrying energy : Exploring energy / Philip Sauvain . - Houndmills : Macmillan education , 1987. - 48 tr ; 24 cm Thông tin xếp giá: N/600/A.000019 |
2 |  | Wood and coal / Philip Sauvain . - London : Macmillan , 1987. - 50 tr ; 24 cm Thông tin xếp giá: N/520/A.000006 |