- 164 - 
428. PUERTO RICO EXPERIMENT STATION 
1937. Ann, Rept. 1936. 103 pp., illus. 
429. UNITED STATES DEPARTMENT OE COMMERCE, BUREAU OP FOREIGN AND DOMESTIC 
COMMERCE 
1935. Rotenone "botanicals in Ecuador. U. S. Dept. Com., Bur. 
Foreign and Dora. Com.,, World Trade Notes on Chemicals 
and Allied Products 9 (26): 5. • 
430. 
432, 
433. 
436, 
437. 
1936. Rotenone import statistics. U. S. Dept. Com., Bur. 
Foreign and Dom. Com., World Trade Notes on Chemicals 
and Allied Products 10 (12): 3-4. 
431. 
1936. Rotenone in Brazil. U. S. Dept. Com., Bur, Foreign 
and Dom. Com,, World Trade Notes on Chemicals and 
Allied Products 10 (18): 4-5. 
1936. Peruvian exports of cube root. U. S. Dept. Com. 
Bur. Foreign and Don. Cor... World Trade Notes on 
Chemicals and Allied Products 10 (20): 4, 
1936. World production of botanical insecticide materials 
increasing, Indus, & Engin, Chem. , News Ed. 
14 (11): 225. 
434. — 
1936. Rotenone import statistics. IJ. S. Dept. Com., Bur. 
Foreign and Dom. Com., World Trade Notes on 
Chemicals and Allied Products 10 (24): 4. 
435. 
1936. Rotenone-bearing roots in Brazil. U. S. Dept, Com., 
Bur. For. and Dom, Com., World Trade Notes on 
Chemicals and Allied Products 10 (36): 5. 
1936. Rotenone-bearing root imports into United States. U. S. 
Dept. Com., Bur. Foreign and Dom. Com., World Trade 
Notes on Chemicals and Allied Products 10 (48): 3. 
1936, Barbasco root collection encouraged — Venezuela, U. S. 
Dept. Com., Bur. Foreign and Dom. Com., World Trade 
Notes on Chemicals and Allied Products 10 (50): 3. 
