00717nam0 2200217 450 00001115020080514103929.020080514d1977----km-y0itay50------baengGBa-------001-yRO/RO shippingan appraisal of its role in dry cargo tradeprepared by the Research Division, H. P. Drewry (Shipping Consultants) LimitedLondonHPD Shipping Publications1977122 p.ill.30 cm387.54420H.P. Drewry :Research Division631223ITUNIPARTHENOPE20080514RICAUNIMARC000011150387.544/10222103NAVA1RO1204147UNIPARTHENOPE01382aam 2200409I 450 991071139480332120160202091802.0GOVPUB-C13-f52a6ed37fbdcb8cb5c534234b0443f2(CKB)5470000002482079(OCoLC)936371186(EXLCZ)99547000000248207920160202d1960 ua 0engrdacontentrdamediardacarrierMean electron density variations of the quiet ionosphere 3 /J. W. Wright, L. A. FineGaithersburg, MD :U.S. Dept. of Commerce, National Institute of Standards and Technology,1960.1 online resourceNBS technical note ;40-31960.Contributed record: Metadata reviewed, not verified. Some fields updated by batch processes.Title from PDF title page.Includes bibliographical references.IonosphereIonosphere.Wright J. W1392660Fine L. A1392661Wright J. W1392660United States.National Bureau of Standards.NBSNBSGPOBOOK9910711394803321Mean electron density variations of the quiet ionosphere 33447713UNINA