Birkhoff, Garrett, 1911 <br/><br/>
Ordenary diferential equations / Ga 

<br/><br/><label>LCCN: </label>TIPO-1=008  220711s0000\\ck\||||g\\\||||\||spa\d 
<br/><br/><label>Dewey Class. No.: </label>517.38  / B619o