Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1921 |
З цієї книги
Результати 1-3 із 80
Сторінка 191
... present prevented serious consideration of such a project . It is entirely conceivable that improvements in the art may soon bring the cost of such a system well within the limits im- posed by economic considerations . Wireless ...
... present prevented serious consideration of such a project . It is entirely conceivable that improvements in the art may soon bring the cost of such a system well within the limits im- posed by economic considerations . Wireless ...
Сторінка 369
... present library of the division . The southern California collection of D. W. Coquillett , comprising mainly Diptera and Coleoptera , with some important Hymenoptera . Additions since 1900 have been numerous and important , especially ...
... present library of the division . The southern California collection of D. W. Coquillett , comprising mainly Diptera and Coleoptera , with some important Hymenoptera . Additions since 1900 have been numerous and important , especially ...
Сторінка 519
... present many oppor- tunities for reclamation not only by irrigation but by drainage and by the clearing of cut - over lands , the latter opportunities occurring chiefly in Montana , Idaho , Washington , Oregon , and California . Only a ...
... present many oppor- tunities for reclamation not only by irrigation but by drainage and by the clearing of cut - over lands , the latter opportunities occurring chiefly in Montana , Idaho , Washington , Oregon , and California . Only a ...
Зміст
Bureau of American Ethnology | 17 |
Report on the United States National Museum | 25 |
EXECUTIVE COMMITTEE AND REGENTS | 100 |
28 інших розділів не відображаються
Інші видання - Показати все
Загальні терміни та фрази
acromegaly actinium agriculture airplane American appears areas astrographic atom birds blueberry body Bohemia Bureau Calama cent chilling cicada collection color crops culture dormant early eclipse eggs elephants entomologists expedition feet field forest gases geographic geological survey glands glass Government growth Guatemala helium important increase Indians insects interest investigations irrigation J. J. Thomson June 30 land mammoth Manchuria material ment method milpa National Museum natural nebulae Observatory observed obtained opal oxide park period photographs plants plates present production publications pupa radiation radium Ramsay Rathbun recent reclamation region right ascension River scientific Secretary shown Smithsonian Institution Smithsonian Report Sobral solar solar constant South species specimens spiral nebulae spirals stars supply temperature tion trees tropical tube United vacuum tube Valley vitreous volumes Washington wireless telephone