小型计算机每周更新食品价格。

1

Hospitals. 1980 Sep 1;54(17):76-7.

2

Hosp Food Nutr Focus. 1990 Dec;7(4):1, 3.

3

Hosp Food Nutr Focus. 1990 Oct;7(2):1, 3-6.

4

Hospitals. 1980 Mar 16;54(6):79-82.

5

Hosp Food Nutr Focus. 1991 Jul;7(11):1, 3-5.

6

J Am Diet Assoc. 1978 Dec;73(6):640-6.

7

Hosp Food Nutr Focus. 1988 Jul;4(11):1, 4-6.

8

J Am Diet Assoc. 1988 May;88(5):586-90.

9

Hospitals. 1979 Mar 1;53(5):76-9.

10

Hosp Food Nutr Focus. 1996 Aug;12(12):1, 6-7.

Minicomputer updates food prices weekly.