Leviticus - Is There a Contradiction?

In Leviticus, there are contradictions between p and h. One example of an internal contradiction in leviticus concerns sex during menstration. The easiest explanation is that tora contains several legal traditions that arose in some respectsi pendently of each other but probably not entirely independently. But anyway, the aeditors who brought these traditions together were not fools. They kept these traditions, these sometimes conflicting traditions, together because they both had value for their communities. And i'm saying all this to you just so you know that i'm not trying to tear the bible apart by pointing out the fact of contradicting laws.