Weiss, P. A. <br/><br/>
Hierarchically organized systems in theory & practice 

 - New York  Hafner Publishing  1971 
 - ix, 263p.  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hierarchically 
<br/><br/><label>LC Class. No.: </label>MED HM 131  / W392