Annual Report of the Board of Regents of the Smithsonian InstitutionThe Institution, 1921 |
З цієї книги
Результати 1-3 із 67
Сторінка 273
... carried out by similar methods and equipment . Occa- sionally the two kinds of work can be combined and carried on simul- taneously . The general question - whether a national geological survey shall do its own topographic mapping ...
... carried out by similar methods and equipment . Occa- sionally the two kinds of work can be combined and carried on simul- taneously . The general question - whether a national geological survey shall do its own topographic mapping ...
Сторінка 315
Smithsonian Institution. Board of Regents. carried on the backs of men for 2 or 3 leagues , and sometimes for much ... carry corn home on their backs , 50 or 60 miles . The tendency is , of course , for people who raise their crops too ...
Smithsonian Institution. Board of Regents. carried on the backs of men for 2 or 3 leagues , and sometimes for much ... carry corn home on their backs , 50 or 60 miles . The tendency is , of course , for people who raise their crops too ...
Сторінка 412
... carried two entomologists . Few people know that as early as 1915 there was a conference of all the principal official entomologists of Russia to consider the vital question of the loss to stored grains by weevils . Later this same ...
... carried two entomologists . Few people know that as early as 1915 there was a conference of all the principal official entomologists of Russia to consider the vital question of the loss to stored grains by weevils . Later this same ...
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