Trinidad. Department of Agriculture <br/><br/>
Gardening in the tropics :  Especially written for school gardens in Trinidad and Tobago. Based on a course of lectures delivered to elementary school teachers at the St. Clair Experiment Station in 1921. / 
by R.O. Williams ... 
 - Revised edition. 
 - Trinidad :  Government Printing Office ,  1933. 
 - 2 preliminary leaves, iii, [3], 68, iip.:  illustrations , diagrams ;  22 cm