A Guide to Methods for Estimating Microbial Numbers and Biomass in Fresh Water

British and Irish Stoneflies (Plecoptera): A key to the adults and larvae with

Macadam, C.R.; Feeley, H.B.; Doe, J.

Price £45.00

Guide to Freshwater Invertebrates

Dobson, M.; Pawley, S.; Fletcher, M.; Powell, A.

Price £33.00

Caddisfly Adults (Trichoptera) of Britain and Ireland: Family level keys and

Crofts, S.M.

Price £27.95

Freshwater Leeches of Britain and Ireland: Keys to the Hirudinea and a Review

Elliott, J.M.; Dobson, M.

Price £27.00

Mayfly Larvae (Ephemeroptera) of Britian and Ireland: Keys and a review of

Elliott, J.M.; Humpesch, U.H.

Price £27.00

British Dixidae (Meniscus Midges) and Thaumaleidae (Trickle Midges) keys with

Disney, R.H.L.

Price £20.00

The Birds of Nigeria: An Annotated Check-list

Elgood, J.H.

Price £7.50

Tropical Rain-Forest: The Leeds Symposium

Chadwick, A.C.; Sutton, S.L. (Eds)

Price £15.00

Ethiopia [Under-Water Paradise]: A Bird's-eye-view for the Tourist - Un aperçu

Jaubert, J.; Petron, C. (Photos)

Price £35.00

A Birders guide to Costa Rica An Introduction to Bird Finding; A Self-Made Tour

Taylor, K.

Price £15.00

A Biological Reconnaissance of the Peterboro Swamp and the Labrador Pond Areas

Spiker, C.J.

Price £10.00

Contribution a la biologie du Lac de Saint-Blaise

Thiebaud, M.

Price £20.00

Ponds, Pools and Puddles (New Naturalist 148)

Biggs, J.; Williams, P.

Price £47.50

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Guide to chalk rivers of England (Identification Chart)

Bell, C.; Shields, C. (Illus)

Price £5.50

Ponds and small lakes: Microorganisms and freshwater ecology (Naturalists'

Moss, B.

Price £22.99

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Contribution a la biologie du Lac de Saint-Blaise

Thiebaud, M.

Price £20.00

Abwasserfrage der Växjöseen in hydrobiologischer Beleuchtung: Grundzüge in der

Thunmark, S.

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Acid Rain: Its Causes and Its Effects on Inland Waters

Mason, B.J.

Price £15.00