The principles of mushroom growing and mushroom spawn making . / Fig. 1.—a Young Speigimen of the Common Puffball(Calvatia CRANIIFORMIS).. Fig. 2.—The Oyster Mushroom iPleurotus ostreatus), Growing on Decayed Willow Log. Bui. 85, Bureau of Plant Industry, U. S. Dept of Agriculture. Plate V.

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Keywords: ., book, bookcentury1900, bookdecade1900, bookpublisherwashingtongpo