ScienceJohn Michels (Journalist) 1952 |
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Стр. 3
... organic substances of different kinds , and , moreover , in various states of accessibility to the extracting ... organic forms requires an isolation of the organic fraction of the soil . There can be no assurance during any isolation ...
... organic substances of different kinds , and , moreover , in various states of accessibility to the extracting ... organic forms requires an isolation of the organic fraction of the soil . There can be no assurance during any isolation ...
Стр. 5
... organic forms . Their high levels in the topsoil may be due , in the Kinchifoonie profiles , to man's agriculture , as well as to their chelation by the organic complexes . Geochemically the topsoil has little or no bearing on our ...
... organic forms . Their high levels in the topsoil may be due , in the Kinchifoonie profiles , to man's agriculture , as well as to their chelation by the organic complexes . Geochemically the topsoil has little or no bearing on our ...
Стр. 372
... organic laboratory and which are available for the investigation of organic compounds . The authors give the theoretical background for an understanding of the various methods and operations and describe the techniques and tools , their ...
... organic laboratory and which are available for the investigation of organic compounds . The authors give the theoretical background for an understanding of the various methods and operations and describe the techniques and tools , their ...
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Библиографические данные
| Название | Science |
| Редактор | John Michels (Journalist) |
| Соавтор | American Association for the Advancement of Science |
| Опубликована: | 1952 |
| Владелец оригинала: | Университет штата Миннесота |
| Оцифровано | 18 дек 2019 |
| Экспорт цитаты | BiBTeX EndNote RefMan |