By Helm D.   in Energy Policy

ISSN:0301-4215|30|3|185-188

Elsevier‎(2002)‎

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By Helm D.   in Energy Policy

ISSN:0301-4215|30|3|173-184

Elsevier‎(2002)‎

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By Helm D.   in Utilities Policy

ISSN:0957-1787|11|1|21-25

Elsevier‎(2003)‎

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True to his Colours The Life that Wears Best‎

By Helm D. A.  

ISBN:gutenbur21133

Project Gutenberg‎(2007)‎

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By Lopez-Gatius F.   Yaniz J.   Madriles-Helm D.   in Theriogenology

ISSN:0093-691X|59|3|801-812

Elsevier‎(2003)‎

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By Chakraborty R.   Lemke E.A.   Cao Z.   Klebba P.E.   van der Helm D.   in BioMetals

ISSN:0966-0844|16|4|507-518

Springer Publishing Company ‎(2003)‎

Access to resources Favorite 5.3088527

By HElM D. C.   KENNEDY G. G.   VANDUYN J. W.   in Journal of Economic Entomology

ISSN:1938-291X|83|4|1229-1235

Entomological Society of America‎(1990)‎

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