Symposium on Juvenility in Woody Perennials  : North American, College Park, Maryland, USA, 28 September - 1 October, 1975 : European, Berlin (West), Germany, 3-6 November, 1975 
organized under the auspices of the Section for Fruits of the International Society for Horticultural Science by a working group of foresters, ornamental horticulturists, and pomologists ; [final editor, R.H. Zimmerman]. 
 - [The Hague  la Sociedad]  1975 
 - 317 p.  24 cm 
 - Acta Horticulturae  56 .
 - Acta Horticulturae .
<br/><br/><label>Subjects--Index Terms: </label>Congresos Plantas leņosas Arboles frutales Horticultura