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<br />CONTENTS <br /> <br />. <br /> <br />FOREWORD <br /> <br />PREFACE <br /> <br />BIOLOGICAL ADV1SORY COMMIITEE <br /> <br />PERSONNEL CONTRIBUTING TO THE <br />BIOLOGICAL METHODS MANUAL <br /> <br />INTRODUCTION <br />BIOMETRICS <br />PLANKTON <br /> <br />PERIPHYTON <br /> <br />MACROPHYTON <br /> <br />MACROINVERTEBRATES <br /> <br />FISH <br /> <br />APPENDIX <br /> <br /> <br />BIOASSAY <br /> <br />x <br /> <br />. <br /> <br />I <br /> <br />~ <br /> <br />I <br />