SCIENTIFIC OBSERVATIONS AND FIELD STUDIES
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BTSCIENTIFIC RESEARCH
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UDC001.891.7
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Descriptor GERWISSENSCHAFTLICHE BEOBACHTUNGEN UND FELDSTUDIEN
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Descriptor ENGSCIENTIFIC OBSERVATIONS AND FIELD STUDIES
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Descriptor FREOBSERVATIONS SCIENTIFIQUES ET ÉTUDES DE TERRAIN
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Variant GERWISSENSCHAFTLICHE FELDSTUDIEN
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Variant GERBEOBACHTUNGEN/WISSENSCHAFTLICHE BEOBACHTUNGEN
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Variant GERFELDSTUDIEN/WISSENSCHAFTLICHE FELDSTUDIEN
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Variant GERPROBENAHME IM FELD
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Variant GERMESSUNGEN IM FELD
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Variant ENGSCIENTIFIC FIELD STUDIES
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Variant ENGFIELD STUDIES/SCIENTIFIC FIELD STUDIES
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Variant ENGOBSERVATIONS/SCIENTIFIC OBSERVATIONS
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Variant ENGSAMPLE DRAWING IN THE FIELD
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Variant ENGSAMPLE TAKING IN THE FIELD
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Variant ENGMEASUREMENTS IN THE FIELD
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Variant FREÉTUDES DE TERRAIN
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Variant FREPRÉLÈVEMENT EN SITU
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Variant FREÉCHANTILLONNAGE EN SITU
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Variant FREMESURES EN SITU
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RTGEOGRAPHICAL DISCOVERIES, VOYAGES OF DISCOVERY, EXPEDITIONS, HISTORY OF GEOGRAPHICAL DISCOVERIES