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21. [Harvesting and conservation of chestnuts].22. [Recent applications of electronics in medicine].23. [The discovery of platinum by the Spanish in the 18th century].24. [Selection of bulls with electron microscope].25. [Radioactive isotopes in biology].27. [Acetylene in the organic chemical industry].28. [Agen prunes can revive].29. [A tom-tom and a human foot found in the stomachs of two tiger sharks].30. [Fight against foot-and-mouth disease].
来源: Nature (Paris, France). 1948年162卷3160期251-3页
31. [Antibiotic between yeasts and ringworms].32. [The use of electrostatic fields in the application of paints].33. [Occupational therapy].34. [The R.C.A electron microscope].36. [Diatoms in decorative art].37. [Is there a yellow or mongolian race?].38. [The crocodile, bloodthirsty reptile].39. [Plant pathology research in Madagascar]. |