The Physical Basis of SocietyD.Appleton, 1928 - 526 من الصفحات |
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الصفحة xii
... Metals 179 Later Metals 180 Limited Supply of Metals 181 • CHAPTER PAGE Culture and Invention The Metals Iron Supply Iron xii CONTENTS.
... Metals 179 Later Metals 180 Limited Supply of Metals 181 • CHAPTER PAGE Culture and Invention The Metals Iron Supply Iron xii CONTENTS.
الصفحة xiii
Carl Kelsey. CHAPTER PAGE Culture and Invention The Metals Iron Supply Iron Alloys Steel Iron Production Copper Zinc Aluminum Tin Lead 182 183 183 184 185 185 186 187 187 187 188 Noble Metals 188 Other Elements of the Machine Age Fire ...
Carl Kelsey. CHAPTER PAGE Culture and Invention The Metals Iron Supply Iron Alloys Steel Iron Production Copper Zinc Aluminum Tin Lead 182 183 183 184 185 185 186 187 187 187 188 Noble Metals 188 Other Elements of the Machine Age Fire ...
الصفحة xiv
... Metal Supplies Indefinite Increase of Population Impossible The Birth Rate Is There a Solution ? PART III MAN TRIES TO UNDERSTAND X. THE ASCENT OF MAN The Infinite Variety of Living Things Man Asks Why ? Theology versus Science Species ...
... Metal Supplies Indefinite Increase of Population Impossible The Birth Rate Is There a Solution ? PART III MAN TRIES TO UNDERSTAND X. THE ASCENT OF MAN The Infinite Variety of Living Things Man Asks Why ? Theology versus Science Species ...
الصفحة 7
... metals as iron , copper , and calcium . The metal- lic stars , including the sun , Arcturus , and Aldebaran , dis- play the common metals . There are stars so cool that they have fluted spectra which do not show the characteristic lines ...
... metals as iron , copper , and calcium . The metal- lic stars , including the sun , Arcturus , and Aldebaran , dis- play the common metals . There are stars so cool that they have fluted spectra which do not show the characteristic lines ...
الصفحة 8
... metals , four are active gases , seven , inert gases , one , a liquid and seven nonmetallic substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare ...
... metals , four are active gases , seven , inert gases , one , a liquid and seven nonmetallic substances , leaving two as semimetallic and the balance to be determined . A few of these elements are very common , the majority are very rare ...
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acres Africa America appears areas Asia atoms average bacteria believe birds body carbon carbon dioxide cause cent century cephalic index changes characters chromosomes civilization climate color common copper crops cultivated culture danger Darwin death rate destroy disease domestic early earth eggs environment Europe European evidence fact feeble-minded females fish forms germ cells given heredity human Ibid important increase Indians individual inheritance insane insects iron killed known land later light living male man's marriage metals miles natural selection nature Negro neolithic organisms ovum oxygen Pará rubber tree parasites physical population possible pounds present problems produced R. S. LULL race seeds seems social South South America species square mile supply T. H. MORGAN temperature things thousand tion to-day trees tropics types United wild woman women