VOLUME 19 NO. 1 JANUARY-JUNE 1997
CONTENTS
A review of upland agriculture, population pressure and environmental degradation in the Philippines
In vitro propagation of citrus maxima (Burm) Merr.
Effect of shading on mango (Mangifera indica L.) seedling stocks grown in different potting media
Root development in sweetpotato stem cuttings as influenced by pre-planting practices
Development and improvement of sweetpotato pickles