The structure of the services index and definitions of the terms contained herein were originally published in A Taxonomy of Human Services: A Conceptual Framework with Standardized Terminology and Definitions for the Field by the Information and Referral Federation of Los Angeles County, Inc., 3035 Tyler Ave., El Monte, CA 91731; Copyright (c) 1983, 1987, 1991. No part of this listing of human services terms and definitions may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electrical, mechanical, photocopying, recording or otherwise without the prior written permission of the Information and Referral Federation of Los Angeles County, Inc.