Earthquake damage, northern Iran, June 21, 1990 : engineering aspects.

Mode of access: Internet.

Niagara controlled humidity method of air conditioning using hygrol, hygienic liquid absorbent. Engineering data presenting a new, simplified method of calculating both the load conditions and the selection of equipment.

Mode of access: Internet.

Unit graph and loss rate optimization : Hydrologic Engineering Center computer program 23-J2-L211.

At head of title : Generalized computer program.