Venverloo, Catharina Johanna <br/><br/>
The lignin of Populus Nigra L. CV. 'Italica'  a comparative study of the lignified structures in tissue cultures and the tissues of the tree. 

 - p. 242-315  ill. 
<br/><br/> Offprint from: Acta Bot. Neerl., 18(1969)2 
<br/><br/>Diss. doct. 
<br/><br/><label>Index Terms--Genre/Form: </label>--Offprints