Halcrow, M. <br/><br/>
The line level and its use in soil cultivation. 

 - Lusaka :  Govt. Printer,  1951. 
 - Bulletin ;  no. 3 of 1951 .
 - Northern Rhodesia. Ministry of African Agriculture. Agricultural bulletin. II ;  Northern Rhodesia. Ministry of African Agriculture. Agricultural bulletin. II ;  Northern Rhodesia. Ministry of African Agriculture. Agricultural bulletin. II ;  Northern Rhodesia. Ministry of African Agriculture. Agricultural bulletin. II ;  3. .
<br/><br/> At head of title: Northern Rhodesia. Department of Agriculture. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leveling.<br/>Tillage.