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- Analiz stočnych vod dlja seľskochozjajstvennogo ispoľzovanija : laboratornoje rukovodstvo po parazitologičeskim i bakteriologičeskim metodam issledovanija / Rachel M. Ayres, D. Duncan Mara - Ženeva : Vsemirnaja organizacija zdravoochranenija , 1999 - 34 s. ISBN 5-225-03600-7 [1, currently available 1]
- Chapters, articles
book
- Analysis of wastewater for use in agriculture : a laboratory manual of parasitological and bacteriological techniques / Rachel M. Ayres, D. Duncan Mara - Geneva : WHO , 1996 - 4, 31 s. ISBN 92-4-154484-8 [1, currently available 1]
- Chapters, articles
book