La Classification Mathématique par matières 2000
Mathematics subject Classification 2000

Query : CC = 90A30

90A30 : invalid MSC 1991 code for the MSC 2000 !

• MSC 1991 section : Environmental economics (natural resource models, harvesting, pollution, etc.)
• MSC 2000 code in relation :
• 91B76 Environmental economics (natural resource models, harvesting, pollution, etc.)

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