Plant growth substances, 1970 : proceedings of  the 7th International Conference on the Plant  Growth Substances held in Canberra, Australia  December 7-11, 1970 
<label>;</label> Carr,Denis J. 
 - Berlin  Springer-Verlag  1972 
 - xiv,837p.  ill.  26 cm. 
<br/><br/>PR 
<br/><br/><label>Dewey Class. No.: </label>581.134063  / I