Matches in Library of Congress for { ?s ?p Agricultural productivity Mathematical models.. }
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- 2005381919 subject "Agricultural productivity Mathematical models.".
- 67028660%2F%2Fr90 subject "Agricultural productivity Mathematical models.".
- 76021327%2F%2Fr902 subject "Agricultural productivity Mathematical models.".
- 85121137 subject "Agricultural productivity Mathematical models.".
- 86143224 subject "Agricultural productivity Mathematical models.".
- 86222114 subject "Agricultural productivity Mathematical models.".
- 89048180 subject "Agricultural productivity Mathematical models.".
- 93153188 subject "Agricultural productivity Mathematical models.".
- 97138392 subject "Agricultural productivity Mathematical models.".
- 98122043 subject "Agricultural productivity Mathematical models.".