RT Journal Article
SR Electronic
T1 Manual of family planning and contraceptive practice
JF The Journal of the Royal College of General Practitioners
JO J R Coll Gen Pract
FD British Journal of General Practice
SP 498
OP 498
VO 21
IS 109
YR 1971
UL http://bjgp.org/content/21/109/498.3.abstract
AB