https://patents.google.com/patent/DE2402411A1/en
DE2402411A1 - Sports-ground maintenance machine appliance mounting - with carrier plate movable to...
The tool mounting for machines working on sports grounds, may be fastened to the front of a tractor or other machine, with a holder plate for the front and a...
sports ground maintenance
https://penrithcity.nsw.gov.au/facilities-recreation/sports/sports-ground-maintenance-and-closures
Sports Ground Maintenance and Closures - Penrith City Council
Penrith City Council
sports ground maintenanceclosurespenrithcitycouncil