0001104659-04-010765 | SC 13G/A | Charles River Laboratories International, Inc.

Investor Relations

Charles River provides essential products and services to help pharmaceutical and biotechnology companies, government agencies and leading academic institutions around the globe accelerate their research and drug development efforts. Our dedicated employees are focused on providing clients with exactly what they need to improve and expedite the discovery, early-stage development and safe manufacture of new therapies for the patients who need them.

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Form

SC 13G/A

Filing Date

Apr 21, 2004

Document Date

Apr 21, 2004

Form Description

An amendment to the SC 13G filing

Filing Group

Other

Company

Charles River Laboratories International, Inc.

Issuer

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Filer

PRIMECAP MANAGEMENT CO/CA/

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