1.
Dent Econ
; 61(6): 26-9, 1971 Jun.
Article
in English
| MEDLINE
| ID: mdl-5281251
2.
Dent Econ
; 60(10): 28-31, 1970 Oct.
Article
in English
| MEDLINE
| ID: mdl-5272634
3.
TIC
; 24(9): 1-5, 1970 Sep.
Article
in English
| MEDLINE
| ID: mdl-5271537