Hafalla, Juliana R., <br/><br/>Essentials of biological sciences / Juliana R. Hafalla and Juliet C. Sarabia  - Revised edition  - Quezon City :  Jollence Publishing,  [date of publication not identified]  ©2004  - 177 pages ;  22 cm <br/><br/>Includes bibliographical references. <br/><br/>Hafalla, J. R. and Sarabia, J. C. (2004). Essentials of biological sciences (Rev. edition). Quezon City: Jollence Publishing.  <br/><br/><label>Subjects--Topical Terms: </label><br/>Biology<br/><br/><label>LC Class. No.: </label>QH 308.2  / H1192 2004