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