erovnuli-samecniero-biblioteka Search for 'au:"Griffiths, David."'

Range improvement in Arizona (Cooperative experiments with the Arizona experiment station.)

By Griffiths, David..
Washington, Govt. print. off., 1901 .
31 p. 26 cm..

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Forage conditions on the northern border of the Great basin, being a report upon investigations made during July and August, 1901, in the region between Winnemucca, Nevada, and Ontario, Oregon.

By Griffiths, David,.
Washington, Govt. print. off., 1902 .
60 p. , At head of title: U.S. Department of agriculture. Bureau of plant industry.

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Forage conditions and problems in eastern Washington, eastern Oregon, northeastern California, and northwestern Nevada.

By Griffiths, David,.
Washington, Govt. print. off., 1903 .
52 p.

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Range investigations in Arizona.

By Griffiths, David,.
Washington, Govt. print. off., 1904 .
62 p.

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The grama grasses: Bouteloua and related genera,

By Griffiths, David,.
Washington, Govt. print. off., 1912 .
viii, 343-428, ix-xi p. , "Bulletin of the United States national museum. Issued February 24, 1912." 25 cm..

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The Madonna lily /

By Griffiths, David,.
Washington, D.C. : U.S. Dept. of Agriculture, 1925 .
18 p., 2 p. of plates ; , Caption title. | "Contribution from Bureau of Plant Industry." 23 cm..

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The production of hyacinth bulbs /

By Griffiths, David,.
Washington D.C. : U.S. Dept. of Agriculture, 1930 .
35 p. : , Caption title. | "Contribution from Bureau of Plant Industry." 23 cm..

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Daffodils /

By Griffiths, David,.
Washington, D.C. : U.S. Dept. of Agriculture, 1930 .
74 p. : , Caption title. | "Contribution from Bureau of Plant Industry." | "Revision of and supersedes U.S. Department of Agriculture. Bulletin 1270, The production of narcissus bulbs." 23 cm..

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Speeding up flowering in the daffodil and the bulbous iris.

By Griffiths, David,.
Washington, U.S. Govt. print. off. 1936 .
18 p. , Contribution from Bureau of plant industry. 23 cm..

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