ScienceJohn Michels (Journalist) 1959 |
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Стр. 191
... soil - science . Soil Profile The migration of carbon is sketched here merely as an example of the general trend of the migration of elements through the soil . Atoms of oxygen , nitrogen , calcium , magnesium , potassium , sodium ...
... soil - science . Soil Profile The migration of carbon is sketched here merely as an example of the general trend of the migration of elements through the soil . Atoms of oxygen , nitrogen , calcium , magnesium , potassium , sodium ...
Стр. 192
... soil . UZ Dre che pe ti A de nd 0 %. recognized as the essential factors of soil formation . Maintenance of the steady state of the soil requires that these factors remain more or less constant . Their constancy is not absolute , indeed ...
... soil . UZ Dre che pe ti A de nd 0 %. recognized as the essential factors of soil formation . Maintenance of the steady state of the soil requires that these factors remain more or less constant . Their constancy is not absolute , indeed ...
Стр. 195
... soil right away , depending upon the available means of transportation . In arid climates , for example , the rate of leaching might be too low to cope with the liberation of free ions by weathering ; hence , some enrichment of the zone ...
... soil right away , depending upon the available means of transportation . In arid climates , for example , the rate of leaching might be too low to cope with the liberation of free ions by weathering ; hence , some enrichment of the zone ...
Содержание
172 | 172 |
Speed versatility and convenience in measuring | 219 |
Volume 10 1959 | 291 |
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AAAS acetylcholine acid activity American amino acids ammonia animals application areas Association Atomic basic behavior biochemical biological California carnitine cells Center Chem chemical chemistry Chicago citron cloud College Colorimeters Committee Council crystals culture Department Dept director effects electron ence energy Engineering enzyme experience field folic acid genetic glycine gram hemoglobin hydroxyproline ical Institute instruments International laboratory Little America measurements mechanism Medical ment methemoglobin microscope mitochondria Model National National Science Foundation nictitating membrane nuclear nuclei observed operation optical organic papers percent Ph.D physics plant present president problems protein protozoa radiation range References and Notes Ruth Benedict samples School Science scientific scientists Society soil Soviet specific surface Technology temperature theory tion tissue ture United Univ University volume Washington World Data Center York