Circular, Bureau of Plant Industry, U S Department of Agriculture. Washington, DC.

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Standard Form
Circ. Bur. Pl. Industr. U.S.D.A.
IPNI Life Sciences Identifier (LSID)
urn:lsid:ipni.org:publications:6214-2
Dates
Nos. 1-132, 1908-13
BPH Identifier
940.25; BPH-2 online