GSIS 2018 Yearbook: No Limits Volume 12 yearbook-reduced | 页面 23
Limitless Experiments Lower Secondary Science and Design Technology 23
GSIS 2018 Yearbook: No Limits Volume 12 yearbook-reduced | 页面 22
GSIS 2018 Yearbook: No Limits Volume 12 yearbook-reduced | 页面 24