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| 035 | ⊔ | ⊔ | ‡asdr-pst.a7775792 |
| 035 | ⊔ | ⊔ | ‡a(OCoLC)16751933 |
| 040 | ⊔ | ⊔ | ‡aSCA ‡cSCA ‡dEEM ‡dOCLCQ ‡dUtOrBLW |
| 050 | ⊔ | 4 | ‡aQC973.4.I6 ‡bJ79 |
| 086 | 0 | ⊔ | ‡aC 55.13:ERL 107-ITS 75 |
| 100 | 1 | ⊔ | ‡aJones, William B., ‡d1931- |
| 245 | 1 | 0 | ‡aAdvances in ionospheric mapping by numerical methods / ‡cWilliam B. Jones, Ronald P. Graham and Margo Leftin. |
| 264 | ⊔ | 2 | ‡aWashington, D.C. : ‡bFor sale by the Superintendent of Documents, U.S. G.P.O. |
| 264 | ⊔ | 1 | ‡aBoulder, Colo. : ‡bInstitute for Telecommunication Sciences, ‡c1969. |
| 300 | ⊔ | ⊔ | ‡aiii, 71 pages : ‡billustrations, maps ; ‡c27 cm. |
| 336 | ⊔ | ⊔ | ‡atext ‡btxt ‡2rdacontent |
| 337 | ⊔ | ⊔ | ‡aunmediated ‡bn ‡2rdamedia |
| 338 | ⊔ | ⊔ | ‡avolume ‡bnc ‡2rdacarrier |
| 490 | 0 | ⊔ | ‡aESSA technical report ; ‡vERL 107-ITS 75 |
| 500 | ⊔ | ⊔ | ‡aThis is a reissue of NBS technical note 337, originally published May 12, 1966. |
| 504 | ⊔ | ⊔ | ‡aIncludes bibliographical references (pages 44-45). |
| 538 | ⊔ | ⊔ | ‡aMode of access: Internet. |
| 650 | ⊔ | 0 | ‡aIonosphere ‡xResearch. |
| 650 | ⊔ | 0 | ‡aIonospheric radio wave propagation ‡vCharts, diagrams, etc. |
| 700 | 1 | ⊔ | ‡aLeftin, Margo. |
| 700 | 1 | ⊔ | ‡aGraham, Ronald P. |
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