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1
French spawn... is contained in flakes of manure.
Mushrooms: how to grow them / a practical treatise on mushroom c...
2
The French spawn is used.
Mushrooms: how to grow them / a practical treatise on mushroom c...
3
The flake spawn is what is generally known as French spawn, and is imported into this country from France.
Mushrooms: how to grow them / a practical treatise on mushroom c...