find_datasets modified to allow an individual netCDF file to be specified as the source.
find_datasets modified to allow an individual netCDF file to be specified as the source.

smr547/agdc,jeremyh/agdc,ama-jharrison/agdc,alex-ip/agdc,alex-ip/agdc,sixy6e/agdc,jeremyh/agdc,sixy6e/agdc,GeoscienceAustralia/agdc,GeoscienceAustralia/agdc,smr547/agdc,ama-jharrison/agdc