Authors:
and
Click on author name to view affiliation information
Article Category: Research Article
Online Publication Date: 01 May 1969
Page(s): 235 – 239
Volume/Issue: Volume 94: Issue 3
Abstract
Click on author name to view affiliation information
Contributor Notes
Received for publication November 8, 1968. Contribution from Massachusetts Agricultural Experiment Station, Amherst.
Research supported in part by a grant from the Massachusetts Society for Promoting Agriculture.
Abstract