- 1Slides showing dairy heat pump equipment (2022-590/6/1)
1954 - 1976, file - 2Slides taken by A S Cromarty (2022-590/6/2)
? 1961, file - 3Images of dairy heat pumps and heat recovery units (2022-590/6/3)
1959 - 1978, file - 4Photographs of dairy heat pump equipment (2022-590/6/4)
c 1959 - c 1975, file - 5Photograph album relating to dairy heat pump research (2022-590/6/5)
1958 - 2018, item
