FIGURE 1-1. Amount of time spent indoors, outdoors, and in transit by most Americans.

FIGURE 1-1

Amount of time spent indoors, outdoors, and in transit by most Americans.

Sources: NRC, 1981; Spengler and Sexton, 1983.

From: 1, Introduction

Cover of Indoor Allergens
Indoor Allergens: Assessing and Controlling Adverse Health Effects.
Institute of Medicine (US) Committee on the Health Effects of Indoor Allergens; Pope AM, Patterson R, Burge H, editors.
Washington (DC): National Academies Press (US); 1993.
Copyright 1993 by the National Academy of Sciences. All rights reserved.

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