org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Soil fertility tests in Tikkurila on July 18th 1959. Finnish Viljavuuskokeet Tikkurilassa...
org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Soil fertility tests Finnish Viljavuuskokeita object of statement has role: photographer...
org/licenses/by/4.0CC BY 4.0 Creative Commons Attribution 4.0 truetrue English Soil fertility tests in Tikkurila on July 18th 1959. Finnish Viljavuuskokeet Tikkurilassa...