[R] Help with "MERGE" gratefully accepted

[Briggs, Meredith M]

Hello

How do I use function 'MERGE" to combine the FILE A and FILE B below to make FILE C?

Thank you



 FILE A      
	140        151        167        	
	30.1         11.4       40     

FILE B

      	140       167      	
	5.7	 30.3

FILE C

	140        151        167        	
	30.1         11.4      40   
	5.7	  NA	    30.3