New genera and subgenera of augochlorine bees (Hymenoptera: Halictidae) / by Michael S. Engel, Robert W. Brooks, and Douglas Yanega.

no.5

Entomological contributions in memory of Byron A. Alexander / edited by George W. Byers, Robert H. Hagen and Robert W. Brooks.

no.24 (1999)

A provisional host-index of the fungi of the United States, by W.G. Farlow and A.B. Seymour.

pt.1

Reise nach den Inseln Teneriffa, Trinidad, St. Thomas, St. Crux und Porto-Rico; auf Befehl der französischen Regierung, vom 30. Sept. 1796 bis zum 7. Juni 1789, unter der Leitung des Capitain Baudin unternommen, von Peter Le Dru. Mit Bemerkungen begleitet, nebst einer allgemeinen Ubersicht des ganzen westindischen Archipels, vorzüglich in Rücksicht der Kolonialwaaren, von E. A. W. Zimmermann.

Bd.2 (1811)

The Benefits of building barrier-free: a contingent valuation of accessibilty as an attribute of housing

Estimating the social benefits of barrier-free building has always required indirect solutions, such as calculating the savings in social services, hospitalisation or adaptations made possible by the increase in accessibility. This research uses the Contingent Valuation Method to gain a direct appraisal of the benefits from barrier-free housing. When comparing two similar dwellings, with the only difference being their accessibility conditions, the 1,007 randomly chosen households that answered the direct survey would pay, on average 12.5 per cent more for being barrier-free. None of the different appraisals made on accessibility costs reaches 5 per cent. This confirms the social profitability of building without barriers and shows the potential size of the private market for those housing developers that meet the demand. Accessibility is a general concern, an economic good or attribute that most households value, irrespective of the physical conditions of their members.