Publication of books; publication of electronic books and journals on-line; publication of texts, other than publicity texts; training in the field of Aviation; writing of books including electronic books, other than publicity texts; providing online e-learning seminars in the field of aircraft maintenance

'aircraft':46 'aviat':25 'book':3,7,28,31 'e':39 'e-learn':38 'electron':6,30 'field':23,44 'includ':29 'journal':9 'learn':40 'line':12 'mainten':47 'on-lin':10 'onlin':37 'provid':36 'public':1,4,13,18,34 'seminar':41 'text':15,19,35 'train':20 'write':26

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