- 10 



The authors prepared a series of tables to compare costs among 

 different systems, and these should prove both interesting and val- 

 uable to anyone trying to decide what systems are most economical 

 for his conditions. The complete publication (Michigan Agr. Expt. 

 Sta, Quarterly Bulletin 50(4) :458-479 , May, 1968) is available free 

 from Michigan State University, East Lansing, Michigan. 



*************** 



All pesticides mentioned in this publication are registered and 

 cleared for the suggested use in accordance with Federal and State 

 laws and regulations. Where trade names are used for identification 

 no product endorsement or discrimination is intended. 



warning; most pesticides are poisonous, read and follow all di- 

 rections AND SAFETY PRECAUTIONS ON LABELS. HANDLE CAREFULLY AND 

 STORE IN ORIGINAL CONTAINERS OUT OF REACH OF CHILDREN, PETS AND 

 LIVESTOCK. DISPOSE OF EMPTY CONTAINERS RIGHT AWAY, IN A SAFE MAN- 

 NER AND PLACE. DO NOT CONTAMINATE FORAGE, STREAMS OR PONDS. 



