In our 4th floor Sci. Ed. building lab (Cnr Grattan and Swanston St. Melbourne State College (Victoria, Australia) (circa. 1974-1978). Photograph: R.Gell

In our 4th floor Sci. Ed. building lab (Cnr Grattan and Swanston St. Melbourne State College (Victoria, Australia) (circa. 1974-1978). Photograph: R.Gell

In our 4th floor Sci. Ed. building lab (Cnr Grattan and Swanston St. Melbourne State College (Victoria, Australia) (circa. 1974-1978). Photograph: R.Gell