Classification

Advances in penicillium and aspergillus systematics

edited by Robert A. Samson and John I. Pitt.

A taxonomic treatment of the palm subtribe Attaleinae (tribe Cocoeae)

Sidney F. Glassman.

The comparative external morphology and systematics of the neotropical parasitic fig wasp genus Idarnes, (Hymenoptera, Torymidae)

by Gordon Gordh.

Trilliums

by Frederick W. Case, Jr. and Roberta B. Case.

Aphelinidae of India (Hymenoptera:Chalcidoidea): a taxonomic revision

by Mohammad Hayat.

Adivinanzas

Caballero, Ma. del Socorro, Montse Gisbert, Carmela Mayor, Llorent Gimenez

Investment in progress: fifteen years of creative U.S. assistance to Israel through grants-in-aid, loans, technical assistance, and the food-for-peace program, P.L. 480.

A joint publication of the U.S. Information Service and the Israel Ministry of Finance.

Catálogo de los alacranes de Mexico

Carlos Rommel Beutelspacher Baigts.

Parnassiana nova XLIX

von Curt Eisner.

Giant carnivorous land snails from Mexico and Central America

Fred G. Thompson.