Madson, Marland L. <br/><br/>
Biological investigations and observations : a series of laboratory sessions for introductory biology 
Marland L. Madson 
 - 2nd ed. 
 - Minneapolis  Burges Publishing Co.  1969 
 - iv, 276p.: ill.; 28cm. 
<br/><br/><label>Dewey Class. No.: </label>574.028  / MAD