One of a series of semiannual reports, this publication contains 13 articles which report the status and progress of studies on the nature of speech, instrumentation for its investigation, and practical applications. Articles and their authors are as follows: "The Role of Contrast in Limiting Vowel-to-Vowel Coarticulation in Different Languages" (Sharon Y. Manuel); "Anticipatory Velar Lowering: A Coproduction Account" (Fredericka Bell-Berti and Rena Arens Krakow); "Converging Sources of Evidence for Dissecting Articulatory Movements into Core Gestures" (Suzanne E. Boyce and others); "Rotation and Translation of the Jaw During Speech" (Jan Edwards and Katherine S. Harris); "Linguistic Structure and Articulatory Dynamics: A Cross Language Study" (Eric Vatikiotis-Bateson and J. A. Scott Kelso); "Gestural Specification Using Dynamically Defined Articulatory Structures" (Catherine P. Browman and Louis Goldstein); "Stimulus Order Effects in Vowel Discrimination" (Bruno H. Repp and Robert G. Crowder); "The Haskins Laboratories' Pulse Code Modulation (PCM) System" (D. H. Whalen and others); "Factors Contributing to Performance on Phoneme Awareness Tasks in School-Aged Children" (Anne E. Fowler); "Short-Term Serial Recall Performance by Good and Poor Readers of Chinese" (Nianqi Ren and Ignatius G. Mattingly); "Recall of Order Information by Deaf Signers: Phonetic Coding in Temporal Order Recall" (Vicki L. Hanson); "The Processing of Inflected Words" (Leonard Katz and others); and "Steady-State and Perturbed Rhythmical Movements: A Dynamical Analysis" (Bruce A. Kay and others). An appendix lists DTIC and ERIC numbers for publications in this series since 1970. (SR)