The Labor Progress Handbook  Early interventions to Prevent and Treat Dystocia 
Simkin,P., Hanson, L., Ancheta, R. 
 - 4th ed. 
 - New Jersey, Canada  John Wiley & Sons  2017 
 - xx, 388p. 
<br/><br/><label>ISBN: </label>9781119170464 
<br/><br/><label>LC Class. No.: </label>RG 701  / .S56 2017