Fly ash as fertilizer.
By: D. C. Martens, J. M. G. Schnappinger, J. W. Doran and F. R. Mulford.
Contributors: Schnappinger, J. M. G; Doran, J. W; Mulford, F. R
Publisher: s.n
Published: 1970
Place of publication: S.l
Notes: Pages 310-326 in US Bur. of Mines, Inf. Circ. 8488.

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